File size: 153,231 Bytes
f0f4f2b |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 |
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
import itertools
import uuid
import warnings
from abc import ABC, abstractmethod
from copy import copy
from dataclasses import dataclass
from datetime import datetime
from enum import Enum
from functools import cached_property, singledispatch
from itertools import chain
from typing import (
TYPE_CHECKING,
Any,
Callable,
Dict,
Generic,
Iterable,
List,
Literal,
Optional,
Set,
Tuple,
TypeVar,
Union,
)
from pydantic import Field, field_validator
from sortedcontainers import SortedList
from typing_extensions import Annotated
import pyiceberg.expressions.parser as parser
from pyiceberg.conversions import from_bytes
from pyiceberg.exceptions import CommitFailedException, ResolveError, ValidationError
from pyiceberg.expressions import (
AlwaysTrue,
And,
BooleanExpression,
EqualTo,
Reference,
)
from pyiceberg.expressions.visitors import (
_InclusiveMetricsEvaluator,
expression_evaluator,
inclusive_projection,
manifest_evaluator,
)
from pyiceberg.io import FileIO, load_file_io
from pyiceberg.manifest import (
POSITIONAL_DELETE_SCHEMA,
DataFile,
DataFileContent,
ManifestContent,
ManifestEntry,
ManifestEntryStatus,
ManifestFile,
PartitionFieldSummary,
write_manifest,
write_manifest_list,
)
from pyiceberg.partitioning import (
INITIAL_PARTITION_SPEC_ID,
PARTITION_FIELD_ID_START,
UNPARTITIONED_PARTITION_SPEC,
PartitionField,
PartitionFieldValue,
PartitionKey,
PartitionSpec,
_PartitionNameGenerator,
_visit_partition_field,
)
from pyiceberg.schema import (
PartnerAccessor,
Schema,
SchemaVisitor,
SchemaWithPartnerVisitor,
assign_fresh_schema_ids,
promote,
visit,
visit_with_partner,
)
from pyiceberg.table.metadata import (
INITIAL_SEQUENCE_NUMBER,
SUPPORTED_TABLE_FORMAT_VERSION,
TableMetadata,
TableMetadataUtil,
)
from pyiceberg.table.name_mapping import (
NameMapping,
update_mapping,
)
from pyiceberg.table.refs import MAIN_BRANCH, SnapshotRef
from pyiceberg.table.snapshots import (
Operation,
Snapshot,
SnapshotLogEntry,
SnapshotSummaryCollector,
Summary,
update_snapshot_summaries,
)
from pyiceberg.table.sorting import UNSORTED_SORT_ORDER, SortOrder
from pyiceberg.transforms import IdentityTransform, TimeTransform, Transform, VoidTransform
from pyiceberg.typedef import (
EMPTY_DICT,
IcebergBaseModel,
IcebergRootModel,
Identifier,
KeyDefaultDict,
Properties,
Record,
TableVersion,
)
from pyiceberg.types import (
IcebergType,
ListType,
MapType,
NestedField,
PrimitiveType,
StructType,
transform_dict_value_to_str,
)
from pyiceberg.utils.concurrent import ExecutorFactory
from pyiceberg.utils.datetime import datetime_to_millis
from pyiceberg.utils.singleton import _convert_to_hashable_type
if TYPE_CHECKING:
import daft
import pandas as pd
import pyarrow as pa
import ray
from duckdb import DuckDBPyConnection
from pyiceberg.catalog import Catalog
ALWAYS_TRUE = AlwaysTrue()
TABLE_ROOT_ID = -1
_JAVA_LONG_MAX = 9223372036854775807
def _check_schema_compatible(table_schema: Schema, other_schema: "pa.Schema") -> None:
"""
Check if the `table_schema` is compatible with `other_schema`.
Two schemas are considered compatible when they are equal in terms of the Iceberg Schema type.
Raises:
ValueError: If the schemas are not compatible.
"""
from pyiceberg.io.pyarrow import _pyarrow_to_schema_without_ids, pyarrow_to_schema
name_mapping = table_schema.name_mapping
try:
task_schema = pyarrow_to_schema(other_schema, name_mapping=name_mapping)
except ValueError as e:
other_schema = _pyarrow_to_schema_without_ids(other_schema)
additional_names = set(other_schema.column_names) - set(table_schema.column_names)
raise ValueError(
f"PyArrow table contains more columns: {', '.join(sorted(additional_names))}. Update the schema first (hint, use union_by_name)."
) from e
if table_schema.as_struct() != task_schema.as_struct():
from rich.console import Console
from rich.table import Table as RichTable
console = Console(record=True)
rich_table = RichTable(show_header=True, header_style="bold")
rich_table.add_column("")
rich_table.add_column("Table field")
rich_table.add_column("Dataframe field")
for lhs in table_schema.fields:
try:
rhs = task_schema.find_field(lhs.field_id)
rich_table.add_row("✅" if lhs == rhs else "❌", str(lhs), str(rhs))
except ValueError:
rich_table.add_row("❌", str(lhs), "Missing")
console.print(rich_table)
raise ValueError(f"Mismatch in fields:\n{console.export_text()}")
class TableProperties:
PARQUET_ROW_GROUP_SIZE_BYTES = "write.parquet.row-group-size-bytes"
PARQUET_ROW_GROUP_SIZE_BYTES_DEFAULT = 128 * 1024 * 1024 # 128 MB
PARQUET_ROW_GROUP_LIMIT = "write.parquet.row-group-limit"
PARQUET_ROW_GROUP_LIMIT_DEFAULT = 128 * 1024 * 1024 # 128 MB
PARQUET_PAGE_SIZE_BYTES = "write.parquet.page-size-bytes"
PARQUET_PAGE_SIZE_BYTES_DEFAULT = 1024 * 1024 # 1 MB
PARQUET_PAGE_ROW_LIMIT = "write.parquet.page-row-limit"
PARQUET_PAGE_ROW_LIMIT_DEFAULT = 20000
PARQUET_DICT_SIZE_BYTES = "write.parquet.dict-size-bytes"
PARQUET_DICT_SIZE_BYTES_DEFAULT = 2 * 1024 * 1024 # 2 MB
PARQUET_COMPRESSION = "write.parquet.compression-codec"
PARQUET_COMPRESSION_DEFAULT = "zstd"
PARQUET_COMPRESSION_LEVEL = "write.parquet.compression-level"
PARQUET_COMPRESSION_LEVEL_DEFAULT = None
PARQUET_BLOOM_FILTER_MAX_BYTES = "write.parquet.bloom-filter-max-bytes"
PARQUET_BLOOM_FILTER_MAX_BYTES_DEFAULT = 1024 * 1024
PARQUET_BLOOM_FILTER_COLUMN_ENABLED_PREFIX = "write.parquet.bloom-filter-enabled.column"
WRITE_TARGET_FILE_SIZE_BYTES = "write.target-file-size-bytes"
WRITE_TARGET_FILE_SIZE_BYTES_DEFAULT = 512 * 1024 * 1024 # 512 MB
DEFAULT_WRITE_METRICS_MODE = "write.metadata.metrics.default"
DEFAULT_WRITE_METRICS_MODE_DEFAULT = "truncate(16)"
METRICS_MODE_COLUMN_CONF_PREFIX = "write.metadata.metrics.column"
WRITE_PARTITION_SUMMARY_LIMIT = "write.summary.partition-limit"
WRITE_PARTITION_SUMMARY_LIMIT_DEFAULT = 0
DEFAULT_NAME_MAPPING = "schema.name-mapping.default"
FORMAT_VERSION = "format-version"
DEFAULT_FORMAT_VERSION = 2
class PropertyUtil:
@staticmethod
def property_as_int(properties: Dict[str, str], property_name: str, default: Optional[int] = None) -> Optional[int]:
if value := properties.get(property_name):
try:
return int(value)
except ValueError as e:
raise ValueError(f"Could not parse table property {property_name} to an integer: {value}") from e
else:
return default
@staticmethod
def property_as_float(properties: Dict[str, str], property_name: str, default: Optional[float] = None) -> Optional[float]:
if value := properties.get(property_name):
try:
return float(value)
except ValueError as e:
raise ValueError(f"Could not parse table property {property_name} to a float: {value}") from e
else:
return default
@staticmethod
def property_as_bool(properties: Dict[str, str], property_name: str, default: bool) -> bool:
if value := properties.get(property_name):
return value.lower() == "true"
return default
class Transaction:
_table: Table
table_metadata: TableMetadata
_autocommit: bool
_updates: Tuple[TableUpdate, ...]
_requirements: Tuple[TableRequirement, ...]
def __init__(self, table: Table, autocommit: bool = False):
"""Open a transaction to stage and commit changes to a table.
Args:
table: The table that will be altered.
autocommit: Option to automatically commit the changes when they are staged.
"""
self.table_metadata = table.metadata
self._table = table
self._autocommit = autocommit
self._updates = ()
self._requirements = ()
def __enter__(self) -> Transaction:
"""Start a transaction to update the table."""
return self
def __exit__(self, _: Any, value: Any, traceback: Any) -> None:
"""Close and commit the transaction."""
self.commit_transaction()
def _apply(self, updates: Tuple[TableUpdate, ...], requirements: Tuple[TableRequirement, ...] = ()) -> Transaction:
"""Check if the requirements are met, and applies the updates to the metadata."""
for requirement in requirements:
requirement.validate(self.table_metadata)
self._updates += updates
self._requirements += requirements
self.table_metadata = update_table_metadata(self.table_metadata, updates)
if self._autocommit:
self.commit_transaction()
self._updates = ()
self._requirements = ()
return self
def upgrade_table_version(self, format_version: TableVersion) -> Transaction:
"""Set the table to a certain version.
Args:
format_version: The newly set version.
Returns:
The alter table builder.
"""
if format_version not in {1, 2}:
raise ValueError(f"Unsupported table format version: {format_version}")
if format_version < self._table.metadata.format_version:
raise ValueError(f"Cannot downgrade v{self._table.metadata.format_version} table to v{format_version}")
if format_version > self._table.metadata.format_version:
return self._apply((UpgradeFormatVersionUpdate(format_version=format_version),))
return self
def set_properties(self, properties: Properties = EMPTY_DICT, **kwargs: Any) -> Transaction:
"""Set properties.
When a property is already set, it will be overwritten.
Args:
properties: The properties set on the table.
kwargs: properties can also be pass as kwargs.
Returns:
The alter table builder.
"""
if properties and kwargs:
raise ValueError("Cannot pass both properties and kwargs")
updates = properties or kwargs
return self._apply((SetPropertiesUpdate(updates=updates),))
def update_schema(self, allow_incompatible_changes: bool = False, case_sensitive: bool = True) -> UpdateSchema:
"""Create a new UpdateSchema to alter the columns of this table.
Args:
allow_incompatible_changes: If changes are allowed that might break downstream consumers.
case_sensitive: If field names are case-sensitive.
Returns:
A new UpdateSchema.
"""
return UpdateSchema(
self,
allow_incompatible_changes=allow_incompatible_changes,
case_sensitive=case_sensitive,
name_mapping=self._table.name_mapping(),
)
def update_snapshot(self, snapshot_properties: Dict[str, str] = EMPTY_DICT) -> UpdateSnapshot:
"""Create a new UpdateSnapshot to produce a new snapshot for the table.
Returns:
A new UpdateSnapshot
"""
return UpdateSnapshot(self, io=self._table.io, snapshot_properties=snapshot_properties)
def append(self, df: pa.Table, snapshot_properties: Dict[str, str] = EMPTY_DICT) -> None:
"""
Shorthand API for appending a PyArrow table to a table transaction.
Args:
df: The Arrow dataframe that will be appended to overwrite the table
snapshot_properties: Custom properties to be added to the snapshot summary
"""
try:
import pyarrow as pa
except ModuleNotFoundError as e:
raise ModuleNotFoundError("For writes PyArrow needs to be installed") from e
if not isinstance(df, pa.Table):
raise ValueError(f"Expected PyArrow table, got: {df}")
if unsupported_partitions := [
field for field in self.table_metadata.spec().fields if not field.transform.supports_pyarrow_transform
]:
raise ValueError(
f"Not all partition types are supported for writes. Following partitions cannot be written using pyarrow: {unsupported_partitions}."
)
_check_schema_compatible(self._table.schema(), other_schema=df.schema)
# cast if the two schemas are compatible but not equal
table_arrow_schema = self._table.schema().as_arrow()
if table_arrow_schema != df.schema:
df = df.cast(table_arrow_schema)
with self.update_snapshot(snapshot_properties=snapshot_properties).fast_append() as update_snapshot:
# skip writing data files if the dataframe is empty
if df.shape[0] > 0:
data_files = _dataframe_to_data_files(
table_metadata=self._table.metadata, write_uuid=update_snapshot.commit_uuid, df=df, io=self._table.io
)
for data_file in data_files:
update_snapshot.append_data_file(data_file)
def overwrite(
self, df: pa.Table, overwrite_filter: BooleanExpression = ALWAYS_TRUE, snapshot_properties: Dict[str, str] = EMPTY_DICT
) -> None:
"""
Shorthand for adding a table overwrite with a PyArrow table to the transaction.
Args:
df: The Arrow dataframe that will be used to overwrite the table
overwrite_filter: ALWAYS_TRUE when you overwrite all the data,
or a boolean expression in case of a partial overwrite
snapshot_properties: Custom properties to be added to the snapshot summary
"""
try:
import pyarrow as pa
except ModuleNotFoundError as e:
raise ModuleNotFoundError("For writes PyArrow needs to be installed") from e
if not isinstance(df, pa.Table):
raise ValueError(f"Expected PyArrow table, got: {df}")
if overwrite_filter != AlwaysTrue():
raise NotImplementedError("Cannot overwrite a subset of a table")
if len(self._table.spec().fields) > 0:
raise ValueError("Cannot write to partitioned tables")
_check_schema_compatible(self._table.schema(), other_schema=df.schema)
# cast if the two schemas are compatible but not equal
table_arrow_schema = self._table.schema().as_arrow()
if table_arrow_schema != df.schema:
df = df.cast(table_arrow_schema)
with self.update_snapshot(snapshot_properties=snapshot_properties).overwrite() as update_snapshot:
# skip writing data files if the dataframe is empty
if df.shape[0] > 0:
data_files = _dataframe_to_data_files(
table_metadata=self._table.metadata, write_uuid=update_snapshot.commit_uuid, df=df, io=self._table.io
)
for data_file in data_files:
update_snapshot.append_data_file(data_file)
def add_files(self, file_paths: List[str], snapshot_properties: Dict[str, str] = EMPTY_DICT) -> None:
"""
Shorthand API for adding files as data files to the table transaction.
Args:
file_paths: The list of full file paths to be added as data files to the table
Raises:
FileNotFoundError: If the file does not exist.
"""
if self._table.name_mapping() is None:
self.set_properties(**{TableProperties.DEFAULT_NAME_MAPPING: self._table.schema().name_mapping.model_dump_json()})
with self.update_snapshot(snapshot_properties=snapshot_properties).fast_append() as update_snapshot:
data_files = _parquet_files_to_data_files(
table_metadata=self._table.metadata, file_paths=file_paths, io=self._table.io
)
for data_file in data_files:
update_snapshot.append_data_file(data_file)
def update_spec(self) -> UpdateSpec:
"""Create a new UpdateSpec to update the partitioning of the table.
Returns:
A new UpdateSpec.
"""
return UpdateSpec(self)
def remove_properties(self, *removals: str) -> Transaction:
"""Remove properties.
Args:
removals: Properties to be removed.
Returns:
The alter table builder.
"""
return self._apply((RemovePropertiesUpdate(removals=removals),))
def update_location(self, location: str) -> Transaction:
"""Set the new table location.
Args:
location: The new location of the table.
Returns:
The alter table builder.
"""
raise NotImplementedError("Not yet implemented")
def commit_transaction(self) -> Table:
"""Commit the changes to the catalog.
Returns:
The table with the updates applied.
"""
if len(self._updates) > 0:
self._requirements += (AssertTableUUID(uuid=self.table_metadata.table_uuid),)
self._table._do_commit( # pylint: disable=W0212
updates=self._updates,
requirements=self._requirements,
)
return self._table
else:
return self._table
class CreateTableTransaction(Transaction):
def _initial_changes(self, table_metadata: TableMetadata) -> None:
"""Set the initial changes that can reconstruct the initial table metadata when creating the CreateTableTransaction."""
self._updates += (
AssignUUIDUpdate(uuid=table_metadata.table_uuid),
UpgradeFormatVersionUpdate(format_version=table_metadata.format_version),
)
schema: Schema = table_metadata.schema()
self._updates += (
AddSchemaUpdate(schema_=schema, last_column_id=schema.highest_field_id, initial_change=True),
SetCurrentSchemaUpdate(schema_id=-1),
)
spec: PartitionSpec = table_metadata.spec()
if spec.is_unpartitioned():
self._updates += (AddPartitionSpecUpdate(spec=UNPARTITIONED_PARTITION_SPEC, initial_change=True),)
else:
self._updates += (AddPartitionSpecUpdate(spec=spec, initial_change=True),)
self._updates += (SetDefaultSpecUpdate(spec_id=-1),)
sort_order: Optional[SortOrder] = table_metadata.sort_order_by_id(table_metadata.default_sort_order_id)
if sort_order is None or sort_order.is_unsorted:
self._updates += (AddSortOrderUpdate(sort_order=UNSORTED_SORT_ORDER, initial_change=True),)
else:
self._updates += (AddSortOrderUpdate(sort_order=sort_order, initial_change=True),)
self._updates += (SetDefaultSortOrderUpdate(sort_order_id=-1),)
self._updates += (
SetLocationUpdate(location=table_metadata.location),
SetPropertiesUpdate(updates=table_metadata.properties),
)
def __init__(self, table: StagedTable):
super().__init__(table, autocommit=False)
self._initial_changes(table.metadata)
def commit_transaction(self) -> Table:
"""Commit the changes to the catalog.
In the case of a CreateTableTransaction, the only requirement is AssertCreate.
Returns:
The table with the updates applied.
"""
self._requirements = (AssertCreate(),)
self._table._do_commit( # pylint: disable=W0212
updates=self._updates,
requirements=self._requirements,
)
return self._table
class AssignUUIDUpdate(IcebergBaseModel):
action: Literal["assign-uuid"] = Field(default="assign-uuid")
uuid: uuid.UUID
class UpgradeFormatVersionUpdate(IcebergBaseModel):
action: Literal["upgrade-format-version"] = Field(default="upgrade-format-version")
format_version: int = Field(alias="format-version")
class AddSchemaUpdate(IcebergBaseModel):
action: Literal["add-schema"] = Field(default="add-schema")
schema_: Schema = Field(alias="schema")
# This field is required: https://github.com/apache/iceberg/pull/7445
last_column_id: int = Field(alias="last-column-id")
initial_change: bool = Field(default=False, exclude=True)
class SetCurrentSchemaUpdate(IcebergBaseModel):
action: Literal["set-current-schema"] = Field(default="set-current-schema")
schema_id: int = Field(
alias="schema-id", description="Schema ID to set as current, or -1 to set last added schema", default=-1
)
class AddPartitionSpecUpdate(IcebergBaseModel):
action: Literal["add-spec"] = Field(default="add-spec")
spec: PartitionSpec
initial_change: bool = Field(default=False, exclude=True)
class SetDefaultSpecUpdate(IcebergBaseModel):
action: Literal["set-default-spec"] = Field(default="set-default-spec")
spec_id: int = Field(
alias="spec-id", description="Partition spec ID to set as the default, or -1 to set last added spec", default=-1
)
class AddSortOrderUpdate(IcebergBaseModel):
action: Literal["add-sort-order"] = Field(default="add-sort-order")
sort_order: SortOrder = Field(alias="sort-order")
initial_change: bool = Field(default=False, exclude=True)
class SetDefaultSortOrderUpdate(IcebergBaseModel):
action: Literal["set-default-sort-order"] = Field(default="set-default-sort-order")
sort_order_id: int = Field(
alias="sort-order-id", description="Sort order ID to set as the default, or -1 to set last added sort order", default=-1
)
class AddSnapshotUpdate(IcebergBaseModel):
action: Literal["add-snapshot"] = Field(default="add-snapshot")
snapshot: Snapshot
class SetSnapshotRefUpdate(IcebergBaseModel):
action: Literal["set-snapshot-ref"] = Field(default="set-snapshot-ref")
ref_name: str = Field(alias="ref-name")
type: Literal["tag", "branch"]
snapshot_id: int = Field(alias="snapshot-id")
max_ref_age_ms: Annotated[Optional[int], Field(alias="max-ref-age-ms", default=None)]
max_snapshot_age_ms: Annotated[Optional[int], Field(alias="max-snapshot-age-ms", default=None)]
min_snapshots_to_keep: Annotated[Optional[int], Field(alias="min-snapshots-to-keep", default=None)]
class RemoveSnapshotsUpdate(IcebergBaseModel):
action: Literal["remove-snapshots"] = Field(default="remove-snapshots")
snapshot_ids: List[int] = Field(alias="snapshot-ids")
class RemoveSnapshotRefUpdate(IcebergBaseModel):
action: Literal["remove-snapshot-ref"] = Field(default="remove-snapshot-ref")
ref_name: str = Field(alias="ref-name")
class SetLocationUpdate(IcebergBaseModel):
action: Literal["set-location"] = Field(default="set-location")
location: str
class SetPropertiesUpdate(IcebergBaseModel):
action: Literal["set-properties"] = Field(default="set-properties")
updates: Dict[str, str]
@field_validator("updates", mode="before")
def transform_properties_dict_value_to_str(cls, properties: Properties) -> Dict[str, str]:
return transform_dict_value_to_str(properties)
class RemovePropertiesUpdate(IcebergBaseModel):
action: Literal["remove-properties"] = Field(default="remove-properties")
removals: List[str]
TableUpdate = Annotated[
Union[
AssignUUIDUpdate,
UpgradeFormatVersionUpdate,
AddSchemaUpdate,
SetCurrentSchemaUpdate,
AddPartitionSpecUpdate,
SetDefaultSpecUpdate,
AddSortOrderUpdate,
SetDefaultSortOrderUpdate,
AddSnapshotUpdate,
SetSnapshotRefUpdate,
RemoveSnapshotsUpdate,
RemoveSnapshotRefUpdate,
SetLocationUpdate,
SetPropertiesUpdate,
RemovePropertiesUpdate,
],
Field(discriminator="action"),
]
class _TableMetadataUpdateContext:
_updates: List[TableUpdate]
def __init__(self) -> None:
self._updates = []
def add_update(self, update: TableUpdate) -> None:
self._updates.append(update)
def is_added_snapshot(self, snapshot_id: int) -> bool:
return any(
update.snapshot.snapshot_id == snapshot_id for update in self._updates if isinstance(update, AddSnapshotUpdate)
)
def is_added_schema(self, schema_id: int) -> bool:
return any(update.schema_.schema_id == schema_id for update in self._updates if isinstance(update, AddSchemaUpdate))
def is_added_partition_spec(self, spec_id: int) -> bool:
return any(update.spec.spec_id == spec_id for update in self._updates if isinstance(update, AddPartitionSpecUpdate))
def is_added_sort_order(self, sort_order_id: int) -> bool:
return any(
update.sort_order.order_id == sort_order_id for update in self._updates if isinstance(update, AddSortOrderUpdate)
)
@singledispatch
def _apply_table_update(update: TableUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
"""Apply a table update to the table metadata.
Args:
update: The update to be applied.
base_metadata: The base metadata to be updated.
context: Contains previous updates and other change tracking information in the current transaction.
Returns:
The updated metadata.
"""
raise NotImplementedError(f"Unsupported table update: {update}")
@_apply_table_update.register(AssignUUIDUpdate)
def _(update: AssignUUIDUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
if update.uuid == base_metadata.table_uuid:
return base_metadata
context.add_update(update)
return base_metadata.model_copy(update={"table_uuid": update.uuid})
@_apply_table_update.register(SetLocationUpdate)
def _(update: SetLocationUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
context.add_update(update)
return base_metadata.model_copy(update={"location": update.location})
@_apply_table_update.register(UpgradeFormatVersionUpdate)
def _(
update: UpgradeFormatVersionUpdate,
base_metadata: TableMetadata,
context: _TableMetadataUpdateContext,
) -> TableMetadata:
if update.format_version > SUPPORTED_TABLE_FORMAT_VERSION:
raise ValueError(f"Unsupported table format version: {update.format_version}")
elif update.format_version < base_metadata.format_version:
raise ValueError(f"Cannot downgrade v{base_metadata.format_version} table to v{update.format_version}")
elif update.format_version == base_metadata.format_version:
return base_metadata
updated_metadata_data = copy(base_metadata.model_dump())
updated_metadata_data["format-version"] = update.format_version
context.add_update(update)
return TableMetadataUtil.parse_obj(updated_metadata_data)
@_apply_table_update.register(SetPropertiesUpdate)
def _(update: SetPropertiesUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
if len(update.updates) == 0:
return base_metadata
properties = dict(base_metadata.properties)
properties.update(update.updates)
context.add_update(update)
return base_metadata.model_copy(update={"properties": properties})
@_apply_table_update.register(RemovePropertiesUpdate)
def _(update: RemovePropertiesUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
if len(update.removals) == 0:
return base_metadata
properties = dict(base_metadata.properties)
for key in update.removals:
properties.pop(key)
context.add_update(update)
return base_metadata.model_copy(update={"properties": properties})
@_apply_table_update.register(AddSchemaUpdate)
def _(update: AddSchemaUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
if update.last_column_id < base_metadata.last_column_id:
raise ValueError(f"Invalid last column id {update.last_column_id}, must be >= {base_metadata.last_column_id}")
metadata_updates: Dict[str, Any] = {
"last_column_id": update.last_column_id,
"schemas": [update.schema_] if update.initial_change else base_metadata.schemas + [update.schema_],
}
context.add_update(update)
return base_metadata.model_copy(update=metadata_updates)
@_apply_table_update.register(SetCurrentSchemaUpdate)
def _(update: SetCurrentSchemaUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
new_schema_id = update.schema_id
if new_schema_id == -1:
# The last added schema should be in base_metadata.schemas at this point
new_schema_id = max(schema.schema_id for schema in base_metadata.schemas)
if not context.is_added_schema(new_schema_id):
raise ValueError("Cannot set current schema to last added schema when no schema has been added")
if new_schema_id == base_metadata.current_schema_id:
return base_metadata
schema = base_metadata.schema_by_id(new_schema_id)
if schema is None:
raise ValueError(f"Schema with id {new_schema_id} does not exist")
context.add_update(update)
return base_metadata.model_copy(update={"current_schema_id": new_schema_id})
@_apply_table_update.register(AddPartitionSpecUpdate)
def _(update: AddPartitionSpecUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
for spec in base_metadata.partition_specs:
if spec.spec_id == update.spec.spec_id and not update.initial_change:
raise ValueError(f"Partition spec with id {spec.spec_id} already exists: {spec}")
metadata_updates: Dict[str, Any] = {
"partition_specs": [update.spec] if update.initial_change else base_metadata.partition_specs + [update.spec],
"last_partition_id": max(
max([field.field_id for field in update.spec.fields], default=0),
base_metadata.last_partition_id or PARTITION_FIELD_ID_START - 1,
),
}
context.add_update(update)
return base_metadata.model_copy(update=metadata_updates)
@_apply_table_update.register(SetDefaultSpecUpdate)
def _(update: SetDefaultSpecUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
new_spec_id = update.spec_id
if new_spec_id == -1:
new_spec_id = max(spec.spec_id for spec in base_metadata.partition_specs)
if not context.is_added_partition_spec(new_spec_id):
raise ValueError("Cannot set current partition spec to last added one when no partition spec has been added")
if new_spec_id == base_metadata.default_spec_id:
return base_metadata
found_spec_id = False
for spec in base_metadata.partition_specs:
found_spec_id = spec.spec_id == new_spec_id
if found_spec_id:
break
if not found_spec_id:
raise ValueError(f"Failed to find spec with id {new_spec_id}")
context.add_update(update)
return base_metadata.model_copy(update={"default_spec_id": new_spec_id})
@_apply_table_update.register(AddSnapshotUpdate)
def _(update: AddSnapshotUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
if len(base_metadata.schemas) == 0:
raise ValueError("Attempting to add a snapshot before a schema is added")
elif len(base_metadata.partition_specs) == 0:
raise ValueError("Attempting to add a snapshot before a partition spec is added")
elif len(base_metadata.sort_orders) == 0:
raise ValueError("Attempting to add a snapshot before a sort order is added")
elif base_metadata.snapshot_by_id(update.snapshot.snapshot_id) is not None:
raise ValueError(f"Snapshot with id {update.snapshot.snapshot_id} already exists")
elif (
base_metadata.format_version == 2
and update.snapshot.sequence_number is not None
and update.snapshot.sequence_number <= base_metadata.last_sequence_number
and update.snapshot.parent_snapshot_id is not None
):
raise ValueError(
f"Cannot add snapshot with sequence number {update.snapshot.sequence_number} "
f"older than last sequence number {base_metadata.last_sequence_number}"
)
context.add_update(update)
return base_metadata.model_copy(
update={
"last_updated_ms": update.snapshot.timestamp_ms,
"last_sequence_number": update.snapshot.sequence_number,
"snapshots": base_metadata.snapshots + [update.snapshot],
}
)
@_apply_table_update.register(SetSnapshotRefUpdate)
def _(update: SetSnapshotRefUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
snapshot_ref = SnapshotRef(
snapshot_id=update.snapshot_id,
snapshot_ref_type=update.type,
min_snapshots_to_keep=update.min_snapshots_to_keep,
max_snapshot_age_ms=update.max_snapshot_age_ms,
max_ref_age_ms=update.max_ref_age_ms,
)
existing_ref = base_metadata.refs.get(update.ref_name)
if existing_ref is not None and existing_ref == snapshot_ref:
return base_metadata
snapshot = base_metadata.snapshot_by_id(snapshot_ref.snapshot_id)
if snapshot is None:
raise ValueError(f"Cannot set {update.ref_name} to unknown snapshot {snapshot_ref.snapshot_id}")
metadata_updates: Dict[str, Any] = {}
if context.is_added_snapshot(snapshot_ref.snapshot_id):
metadata_updates["last_updated_ms"] = snapshot.timestamp_ms
if update.ref_name == MAIN_BRANCH:
metadata_updates["current_snapshot_id"] = snapshot_ref.snapshot_id
if "last_updated_ms" not in metadata_updates:
metadata_updates["last_updated_ms"] = datetime_to_millis(datetime.now().astimezone())
metadata_updates["snapshot_log"] = base_metadata.snapshot_log + [
SnapshotLogEntry(
snapshot_id=snapshot_ref.snapshot_id,
timestamp_ms=metadata_updates["last_updated_ms"],
)
]
metadata_updates["refs"] = {**base_metadata.refs, update.ref_name: snapshot_ref}
context.add_update(update)
return base_metadata.model_copy(update=metadata_updates)
@_apply_table_update.register(AddSortOrderUpdate)
def _(update: AddSortOrderUpdate, base_metadata: TableMetadata, context: _TableMetadataUpdateContext) -> TableMetadata:
context.add_update(update)
return base_metadata.model_copy(
update={
"sort_orders": [update.sort_order] if update.initial_change else base_metadata.sort_orders + [update.sort_order],
}
)
@_apply_table_update.register(SetDefaultSortOrderUpdate)
def _(
update: SetDefaultSortOrderUpdate,
base_metadata: TableMetadata,
context: _TableMetadataUpdateContext,
) -> TableMetadata:
new_sort_order_id = update.sort_order_id
if new_sort_order_id == -1:
# The last added sort order should be in base_metadata.sort_orders at this point
new_sort_order_id = max(sort_order.order_id for sort_order in base_metadata.sort_orders)
if not context.is_added_sort_order(new_sort_order_id):
raise ValueError("Cannot set current sort order to the last added one when no sort order has been added")
if new_sort_order_id == base_metadata.default_sort_order_id:
return base_metadata
sort_order = base_metadata.sort_order_by_id(new_sort_order_id)
if sort_order is None:
raise ValueError(f"Sort order with id {new_sort_order_id} does not exist")
context.add_update(update)
return base_metadata.model_copy(update={"default_sort_order_id": new_sort_order_id})
def update_table_metadata(
base_metadata: TableMetadata, updates: Tuple[TableUpdate, ...], enforce_validation: bool = False
) -> TableMetadata:
"""Update the table metadata with the given updates in one transaction.
Args:
base_metadata: The base metadata to be updated.
updates: The updates in one transaction.
enforce_validation: Whether to trigger validation after applying the updates.
Returns:
The metadata with the updates applied.
"""
context = _TableMetadataUpdateContext()
new_metadata = base_metadata
for update in updates:
new_metadata = _apply_table_update(update, new_metadata, context)
if enforce_validation:
return TableMetadataUtil.parse_obj(new_metadata.model_dump())
else:
return new_metadata.model_copy(deep=True)
class ValidatableTableRequirement(IcebergBaseModel):
type: str
@abstractmethod
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
"""Validate the requirement against the base metadata.
Args:
base_metadata: The base metadata to be validated against.
Raises:
CommitFailedException: When the requirement is not met.
"""
...
class AssertCreate(ValidatableTableRequirement):
"""The table must not already exist; used for create transactions."""
type: Literal["assert-create"] = Field(default="assert-create")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is not None:
raise CommitFailedException("Table already exists")
class AssertTableUUID(ValidatableTableRequirement):
"""The table UUID must match the requirement's `uuid`."""
type: Literal["assert-table-uuid"] = Field(default="assert-table-uuid")
uuid: uuid.UUID
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif self.uuid != base_metadata.table_uuid:
raise CommitFailedException(f"Table UUID does not match: {self.uuid} != {base_metadata.table_uuid}")
class AssertRefSnapshotId(ValidatableTableRequirement):
"""The table branch or tag identified by the requirement's `ref` must reference the requirement's `snapshot-id`.
if `snapshot-id` is `null` or missing, the ref must not already exist.
"""
type: Literal["assert-ref-snapshot-id"] = Field(default="assert-ref-snapshot-id")
ref: str = Field(...)
snapshot_id: Optional[int] = Field(default=None, alias="snapshot-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif snapshot_ref := base_metadata.refs.get(self.ref):
ref_type = snapshot_ref.snapshot_ref_type
if self.snapshot_id is None:
raise CommitFailedException(f"Requirement failed: {ref_type} {self.ref} was created concurrently")
elif self.snapshot_id != snapshot_ref.snapshot_id:
raise CommitFailedException(
f"Requirement failed: {ref_type} {self.ref} has changed: expected id {self.snapshot_id}, found {snapshot_ref.snapshot_id}"
)
elif self.snapshot_id is not None:
raise CommitFailedException(f"Requirement failed: branch or tag {self.ref} is missing, expected {self.snapshot_id}")
class AssertLastAssignedFieldId(ValidatableTableRequirement):
"""The table's last assigned column id must match the requirement's `last-assigned-field-id`."""
type: Literal["assert-last-assigned-field-id"] = Field(default="assert-last-assigned-field-id")
last_assigned_field_id: int = Field(..., alias="last-assigned-field-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif base_metadata.last_column_id != self.last_assigned_field_id:
raise CommitFailedException(
f"Requirement failed: last assigned field id has changed: expected {self.last_assigned_field_id}, found {base_metadata.last_column_id}"
)
class AssertCurrentSchemaId(ValidatableTableRequirement):
"""The table's current schema id must match the requirement's `current-schema-id`."""
type: Literal["assert-current-schema-id"] = Field(default="assert-current-schema-id")
current_schema_id: int = Field(..., alias="current-schema-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif self.current_schema_id != base_metadata.current_schema_id:
raise CommitFailedException(
f"Requirement failed: current schema id has changed: expected {self.current_schema_id}, found {base_metadata.current_schema_id}"
)
class AssertLastAssignedPartitionId(ValidatableTableRequirement):
"""The table's last assigned partition id must match the requirement's `last-assigned-partition-id`."""
type: Literal["assert-last-assigned-partition-id"] = Field(default="assert-last-assigned-partition-id")
last_assigned_partition_id: Optional[int] = Field(..., alias="last-assigned-partition-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif base_metadata.last_partition_id != self.last_assigned_partition_id:
raise CommitFailedException(
f"Requirement failed: last assigned partition id has changed: expected {self.last_assigned_partition_id}, found {base_metadata.last_partition_id}"
)
class AssertDefaultSpecId(ValidatableTableRequirement):
"""The table's default spec id must match the requirement's `default-spec-id`."""
type: Literal["assert-default-spec-id"] = Field(default="assert-default-spec-id")
default_spec_id: int = Field(..., alias="default-spec-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif self.default_spec_id != base_metadata.default_spec_id:
raise CommitFailedException(
f"Requirement failed: default spec id has changed: expected {self.default_spec_id}, found {base_metadata.default_spec_id}"
)
class AssertDefaultSortOrderId(ValidatableTableRequirement):
"""The table's default sort order id must match the requirement's `default-sort-order-id`."""
type: Literal["assert-default-sort-order-id"] = Field(default="assert-default-sort-order-id")
default_sort_order_id: int = Field(..., alias="default-sort-order-id")
def validate(self, base_metadata: Optional[TableMetadata]) -> None:
if base_metadata is None:
raise CommitFailedException("Requirement failed: current table metadata is missing")
elif self.default_sort_order_id != base_metadata.default_sort_order_id:
raise CommitFailedException(
f"Requirement failed: default sort order id has changed: expected {self.default_sort_order_id}, found {base_metadata.default_sort_order_id}"
)
TableRequirement = Annotated[
Union[
AssertCreate,
AssertTableUUID,
AssertRefSnapshotId,
AssertLastAssignedFieldId,
AssertCurrentSchemaId,
AssertLastAssignedPartitionId,
AssertDefaultSpecId,
AssertDefaultSortOrderId,
],
Field(discriminator="type"),
]
UpdatesAndRequirements = Tuple[Tuple[TableUpdate, ...], Tuple[TableRequirement, ...]]
class Namespace(IcebergRootModel[List[str]]):
"""Reference to one or more levels of a namespace."""
root: List[str] = Field(
...,
description="Reference to one or more levels of a namespace",
)
class TableIdentifier(IcebergBaseModel):
"""Fully Qualified identifier to a table."""
namespace: Namespace
name: str
class CommitTableRequest(IcebergBaseModel):
identifier: TableIdentifier = Field()
requirements: Tuple[TableRequirement, ...] = Field(default_factory=tuple)
updates: Tuple[TableUpdate, ...] = Field(default_factory=tuple)
class CommitTableResponse(IcebergBaseModel):
metadata: TableMetadata
metadata_location: str = Field(alias="metadata-location")
class Table:
identifier: Identifier = Field()
metadata: TableMetadata
metadata_location: str = Field()
io: FileIO
catalog: Catalog
def __init__(
self, identifier: Identifier, metadata: TableMetadata, metadata_location: str, io: FileIO, catalog: Catalog
) -> None:
self.identifier = identifier
self.metadata = metadata
self.metadata_location = metadata_location
self.io = io
self.catalog = catalog
def transaction(self) -> Transaction:
"""Create a new transaction object to first stage the changes, and then commit them to the catalog.
Returns:
The transaction object
"""
return Transaction(self)
@property
def inspect(self) -> InspectTable:
"""Return the InspectTable object to browse the table metadata."""
return InspectTable(self)
def refresh(self) -> Table:
"""Refresh the current table metadata."""
fresh = self.catalog.load_table(self.identifier[1:])
self.metadata = fresh.metadata
self.io = fresh.io
self.metadata_location = fresh.metadata_location
return self
def name(self) -> Identifier:
"""Return the identifier of this table."""
return self.identifier
def scan(
self,
row_filter: Union[str, BooleanExpression] = ALWAYS_TRUE,
selected_fields: Tuple[str, ...] = ("*",),
case_sensitive: bool = True,
snapshot_id: Optional[int] = None,
options: Properties = EMPTY_DICT,
limit: Optional[int] = None,
) -> DataScan:
return DataScan(
table_metadata=self.metadata,
io=self.io,
row_filter=row_filter,
selected_fields=selected_fields,
case_sensitive=case_sensitive,
snapshot_id=snapshot_id,
options=options,
limit=limit,
)
@property
def format_version(self) -> TableVersion:
return self.metadata.format_version
def schema(self) -> Schema:
"""Return the schema for this table."""
return next(schema for schema in self.metadata.schemas if schema.schema_id == self.metadata.current_schema_id)
def schemas(self) -> Dict[int, Schema]:
"""Return a dict of the schema of this table."""
return {schema.schema_id: schema for schema in self.metadata.schemas}
def spec(self) -> PartitionSpec:
"""Return the partition spec of this table."""
return next(spec for spec in self.metadata.partition_specs if spec.spec_id == self.metadata.default_spec_id)
def specs(self) -> Dict[int, PartitionSpec]:
"""Return a dict the partition specs this table."""
return {spec.spec_id: spec for spec in self.metadata.partition_specs}
def sort_order(self) -> SortOrder:
"""Return the sort order of this table."""
return next(
sort_order for sort_order in self.metadata.sort_orders if sort_order.order_id == self.metadata.default_sort_order_id
)
def sort_orders(self) -> Dict[int, SortOrder]:
"""Return a dict of the sort orders of this table."""
return {sort_order.order_id: sort_order for sort_order in self.metadata.sort_orders}
def last_partition_id(self) -> int:
"""Return the highest assigned partition field ID across all specs or 999 if only the unpartitioned spec exists."""
if self.metadata.last_partition_id:
return self.metadata.last_partition_id
return PARTITION_FIELD_ID_START - 1
@property
def properties(self) -> Dict[str, str]:
"""Properties of the table."""
return self.metadata.properties
def location(self) -> str:
"""Return the table's base location."""
return self.metadata.location
@property
def last_sequence_number(self) -> int:
return self.metadata.last_sequence_number
def current_snapshot(self) -> Optional[Snapshot]:
"""Get the current snapshot for this table, or None if there is no current snapshot."""
if self.metadata.current_snapshot_id is not None:
return self.snapshot_by_id(self.metadata.current_snapshot_id)
return None
def snapshot_by_id(self, snapshot_id: int) -> Optional[Snapshot]:
"""Get the snapshot of this table with the given id, or None if there is no matching snapshot."""
return self.metadata.snapshot_by_id(snapshot_id)
def snapshot_by_name(self, name: str) -> Optional[Snapshot]:
"""Return the snapshot referenced by the given name or null if no such reference exists."""
if ref := self.metadata.refs.get(name):
return self.snapshot_by_id(ref.snapshot_id)
return None
def snapshot_as_of_timestamp(self, timestamp_ms: int, inclusive: bool = True) -> Optional[Snapshot]:
"""Get the snapshot that was current as of or right before the given timestamp, or None if there is no matching snapshot.
Args:
timestamp_ms: Find snapshot that was current at/before this timestamp
inclusive: Includes timestamp_ms in search when True. Excludes timestamp_ms when False
"""
for log_entry in reversed(self.history()):
if (inclusive and log_entry.timestamp_ms <= timestamp_ms) or log_entry.timestamp_ms < timestamp_ms:
return self.snapshot_by_id(log_entry.snapshot_id)
return None
def history(self) -> List[SnapshotLogEntry]:
"""Get the snapshot history of this table."""
return self.metadata.snapshot_log
def update_schema(self, allow_incompatible_changes: bool = False, case_sensitive: bool = True) -> UpdateSchema:
"""Create a new UpdateSchema to alter the columns of this table.
Args:
allow_incompatible_changes: If changes are allowed that might break downstream consumers.
case_sensitive: If field names are case-sensitive.
Returns:
A new UpdateSchema.
"""
return UpdateSchema(
transaction=Transaction(self, autocommit=True),
allow_incompatible_changes=allow_incompatible_changes,
case_sensitive=case_sensitive,
name_mapping=self.name_mapping(),
)
def name_mapping(self) -> Optional[NameMapping]:
"""Return the table's field-id NameMapping."""
return self.metadata.name_mapping()
def append(self, df: pa.Table, snapshot_properties: Dict[str, str] = EMPTY_DICT) -> None:
"""
Shorthand API for appending a PyArrow table to the table.
Args:
df: The Arrow dataframe that will be appended to overwrite the table
snapshot_properties: Custom properties to be added to the snapshot summary
"""
with self.transaction() as tx:
tx.append(df=df, snapshot_properties=snapshot_properties)
def overwrite(
self, df: pa.Table, overwrite_filter: BooleanExpression = ALWAYS_TRUE, snapshot_properties: Dict[str, str] = EMPTY_DICT
) -> None:
"""
Shorthand for overwriting the table with a PyArrow table.
Args:
df: The Arrow dataframe that will be used to overwrite the table
overwrite_filter: ALWAYS_TRUE when you overwrite all the data,
or a boolean expression in case of a partial overwrite
snapshot_properties: Custom properties to be added to the snapshot summary
"""
with self.transaction() as tx:
tx.overwrite(df=df, overwrite_filter=overwrite_filter, snapshot_properties=snapshot_properties)
def add_files(self, file_paths: List[str], snapshot_properties: Dict[str, str] = EMPTY_DICT) -> None:
"""
Shorthand API for adding files as data files to the table.
Args:
file_paths: The list of full file paths to be added as data files to the table
Raises:
FileNotFoundError: If the file does not exist.
"""
with self.transaction() as tx:
tx.add_files(file_paths=file_paths, snapshot_properties=snapshot_properties)
def update_spec(self, case_sensitive: bool = True) -> UpdateSpec:
return UpdateSpec(Transaction(self, autocommit=True), case_sensitive=case_sensitive)
def refs(self) -> Dict[str, SnapshotRef]:
"""Return the snapshot references in the table."""
return self.metadata.refs
def _do_commit(self, updates: Tuple[TableUpdate, ...], requirements: Tuple[TableRequirement, ...]) -> None:
response = self.catalog._commit_table( # pylint: disable=W0212
CommitTableRequest(
identifier=TableIdentifier(namespace=self.identifier[:-1], name=self.identifier[-1]),
updates=updates,
requirements=requirements,
)
) # pylint: disable=W0212
self.metadata = response.metadata
self.metadata_location = response.metadata_location
def __eq__(self, other: Any) -> bool:
"""Return the equality of two instances of the Table class."""
return (
self.identifier == other.identifier
and self.metadata == other.metadata
and self.metadata_location == other.metadata_location
if isinstance(other, Table)
else False
)
def __repr__(self) -> str:
"""Return the string representation of the Table class."""
table_name = self.catalog.table_name_from(self.identifier)
schema_str = ",\n ".join(str(column) for column in self.schema().columns if self.schema())
partition_str = f"partition by: [{', '.join(field.name for field in self.spec().fields if self.spec())}]"
sort_order_str = f"sort order: [{', '.join(str(field) for field in self.sort_order().fields if self.sort_order())}]"
snapshot_str = f"snapshot: {str(self.current_snapshot()) if self.current_snapshot() else 'null'}"
result_str = f"{table_name}(\n {schema_str}\n),\n{partition_str},\n{sort_order_str},\n{snapshot_str}"
return result_str
def to_daft(self) -> daft.DataFrame:
"""Read a Daft DataFrame lazily from this Iceberg table.
Returns:
daft.DataFrame: Unmaterialized Daft Dataframe created from the Iceberg table
"""
import daft
return daft.read_iceberg(self)
class StaticTable(Table):
"""Load a table directly from a metadata file (i.e., without using a catalog)."""
def refresh(self) -> Table:
"""Refresh the current table metadata."""
raise NotImplementedError("To be implemented")
@classmethod
def from_metadata(cls, metadata_location: str, properties: Properties = EMPTY_DICT) -> StaticTable:
io = load_file_io(properties=properties, location=metadata_location)
file = io.new_input(metadata_location)
from pyiceberg.serializers import FromInputFile
metadata = FromInputFile.table_metadata(file)
from pyiceberg.catalog.noop import NoopCatalog
return cls(
identifier=("static-table", metadata_location),
metadata_location=metadata_location,
metadata=metadata,
io=load_file_io({**properties, **metadata.properties}),
catalog=NoopCatalog("static-table"),
)
class StagedTable(Table):
def refresh(self) -> Table:
raise ValueError("Cannot refresh a staged table")
def scan(
self,
row_filter: Union[str, BooleanExpression] = ALWAYS_TRUE,
selected_fields: Tuple[str, ...] = ("*",),
case_sensitive: bool = True,
snapshot_id: Optional[int] = None,
options: Properties = EMPTY_DICT,
limit: Optional[int] = None,
) -> DataScan:
raise ValueError("Cannot scan a staged table")
def to_daft(self) -> daft.DataFrame:
raise ValueError("Cannot convert a staged table to a Daft DataFrame")
def _parse_row_filter(expr: Union[str, BooleanExpression]) -> BooleanExpression:
"""Accept an expression in the form of a BooleanExpression or a string.
In the case of a string, it will be converted into a unbound BooleanExpression.
Args:
expr: Expression as a BooleanExpression or a string.
Returns: An unbound BooleanExpression.
"""
return parser.parse(expr) if isinstance(expr, str) else expr
S = TypeVar("S", bound="TableScan", covariant=True)
class TableScan(ABC):
table_metadata: TableMetadata
io: FileIO
row_filter: BooleanExpression
selected_fields: Tuple[str, ...]
case_sensitive: bool
snapshot_id: Optional[int]
options: Properties
limit: Optional[int]
def __init__(
self,
table_metadata: TableMetadata,
io: FileIO,
row_filter: Union[str, BooleanExpression] = ALWAYS_TRUE,
selected_fields: Tuple[str, ...] = ("*",),
case_sensitive: bool = True,
snapshot_id: Optional[int] = None,
options: Properties = EMPTY_DICT,
limit: Optional[int] = None,
):
self.table_metadata = table_metadata
self.io = io
self.row_filter = _parse_row_filter(row_filter)
self.selected_fields = selected_fields
self.case_sensitive = case_sensitive
self.snapshot_id = snapshot_id
self.options = options
self.limit = limit
def snapshot(self) -> Optional[Snapshot]:
if self.snapshot_id:
return self.table_metadata.snapshot_by_id(self.snapshot_id)
return self.table_metadata.current_snapshot()
def projection(self) -> Schema:
current_schema = self.table_metadata.schema()
if self.snapshot_id is not None:
snapshot = self.table_metadata.snapshot_by_id(self.snapshot_id)
if snapshot is not None:
if snapshot.schema_id is not None:
try:
current_schema = next(
schema for schema in self.table_metadata.schemas if schema.schema_id == snapshot.schema_id
)
except StopIteration:
warnings.warn(f"Metadata does not contain schema with id: {snapshot.schema_id}")
else:
raise ValueError(f"Snapshot not found: {self.snapshot_id}")
if "*" in self.selected_fields:
return current_schema
return current_schema.select(*self.selected_fields, case_sensitive=self.case_sensitive)
@abstractmethod
def plan_files(self) -> Iterable[ScanTask]: ...
@abstractmethod
def to_arrow(self) -> pa.Table: ...
@abstractmethod
def to_pandas(self, **kwargs: Any) -> pd.DataFrame: ...
def update(self: S, **overrides: Any) -> S:
"""Create a copy of this table scan with updated fields."""
return type(self)(**{**self.__dict__, **overrides})
def use_ref(self: S, name: str) -> S:
if self.snapshot_id:
raise ValueError(f"Cannot override ref, already set snapshot id={self.snapshot_id}")
if snapshot := self.table_metadata.snapshot_by_name(name):
return self.update(snapshot_id=snapshot.snapshot_id)
raise ValueError(f"Cannot scan unknown ref={name}")
def select(self: S, *field_names: str) -> S:
if "*" in self.selected_fields:
return self.update(selected_fields=field_names)
return self.update(selected_fields=tuple(set(self.selected_fields).intersection(set(field_names))))
def filter(self: S, expr: Union[str, BooleanExpression]) -> S:
return self.update(row_filter=And(self.row_filter, _parse_row_filter(expr)))
def with_case_sensitive(self: S, case_sensitive: bool = True) -> S:
return self.update(case_sensitive=case_sensitive)
class ScanTask(ABC):
pass
@dataclass(init=False)
class FileScanTask(ScanTask):
file: DataFile
delete_files: Set[DataFile]
start: int
length: int
def __init__(
self,
data_file: DataFile,
delete_files: Optional[Set[DataFile]] = None,
start: Optional[int] = None,
length: Optional[int] = None,
) -> None:
self.file = data_file
self.delete_files = delete_files or set()
self.start = start or 0
self.length = length or data_file.file_size_in_bytes
def _open_manifest(
io: FileIO,
manifest: ManifestFile,
partition_filter: Callable[[DataFile], bool],
metrics_evaluator: Callable[[DataFile], bool],
) -> List[ManifestEntry]:
return [
manifest_entry
for manifest_entry in manifest.fetch_manifest_entry(io, discard_deleted=True)
if partition_filter(manifest_entry.data_file) and metrics_evaluator(manifest_entry.data_file)
]
def _min_data_file_sequence_number(manifests: List[ManifestFile]) -> int:
try:
return min(
manifest.min_sequence_number or INITIAL_SEQUENCE_NUMBER
for manifest in manifests
if manifest.content == ManifestContent.DATA
)
except ValueError:
# In case of an empty iterator
return INITIAL_SEQUENCE_NUMBER
def _match_deletes_to_data_file(data_entry: ManifestEntry, positional_delete_entries: SortedList[ManifestEntry]) -> Set[DataFile]:
"""Check if the delete file is relevant for the data file.
Using the column metrics to see if the filename is in the lower and upper bound.
Args:
data_entry (ManifestEntry): The manifest entry path of the datafile.
positional_delete_entries (List[ManifestEntry]): All the candidate positional deletes manifest entries.
Returns:
A set of files that are relevant for the data file.
"""
relevant_entries = positional_delete_entries[positional_delete_entries.bisect_right(data_entry) :]
if len(relevant_entries) > 0:
evaluator = _InclusiveMetricsEvaluator(POSITIONAL_DELETE_SCHEMA, EqualTo("file_path", data_entry.data_file.file_path))
return {
positional_delete_entry.data_file
for positional_delete_entry in relevant_entries
if evaluator.eval(positional_delete_entry.data_file)
}
else:
return set()
class DataScan(TableScan):
def _build_partition_projection(self, spec_id: int) -> BooleanExpression:
project = inclusive_projection(self.table_metadata.schema(), self.table_metadata.specs()[spec_id])
return project(self.row_filter)
@cached_property
def partition_filters(self) -> KeyDefaultDict[int, BooleanExpression]:
return KeyDefaultDict(self._build_partition_projection)
def _build_manifest_evaluator(self, spec_id: int) -> Callable[[ManifestFile], bool]:
spec = self.table_metadata.specs()[spec_id]
return manifest_evaluator(spec, self.table_metadata.schema(), self.partition_filters[spec_id], self.case_sensitive)
def _build_partition_evaluator(self, spec_id: int) -> Callable[[DataFile], bool]:
spec = self.table_metadata.specs()[spec_id]
partition_type = spec.partition_type(self.table_metadata.schema())
partition_schema = Schema(*partition_type.fields)
partition_expr = self.partition_filters[spec_id]
# The lambda created here is run in multiple threads.
# So we avoid creating _EvaluatorExpression methods bound to a single
# shared instance across multiple threads.
return lambda data_file: expression_evaluator(partition_schema, partition_expr, self.case_sensitive)(data_file.partition)
def _check_sequence_number(self, min_data_sequence_number: int, manifest: ManifestFile) -> bool:
"""Ensure that no manifests are loaded that contain deletes that are older than the data.
Args:
min_data_sequence_number (int): The minimal sequence number.
manifest (ManifestFile): A ManifestFile that can be either data or deletes.
Returns:
Boolean indicating if it is either a data file, or a relevant delete file.
"""
return manifest.content == ManifestContent.DATA or (
# Not interested in deletes that are older than the data
manifest.content == ManifestContent.DELETES
and (manifest.sequence_number or INITIAL_SEQUENCE_NUMBER) >= min_data_sequence_number
)
def plan_files(self) -> Iterable[FileScanTask]:
"""Plans the relevant files by filtering on the PartitionSpecs.
Returns:
List of FileScanTasks that contain both data and delete files.
"""
snapshot = self.snapshot()
if not snapshot:
return iter([])
# step 1: filter manifests using partition summaries
# the filter depends on the partition spec used to write the manifest file, so create a cache of filters for each spec id
manifest_evaluators: Dict[int, Callable[[ManifestFile], bool]] = KeyDefaultDict(self._build_manifest_evaluator)
manifests = [
manifest_file
for manifest_file in snapshot.manifests(self.io)
if manifest_evaluators[manifest_file.partition_spec_id](manifest_file)
]
# step 2: filter the data files in each manifest
# this filter depends on the partition spec used to write the manifest file
partition_evaluators: Dict[int, Callable[[DataFile], bool]] = KeyDefaultDict(self._build_partition_evaluator)
metrics_evaluator = _InclusiveMetricsEvaluator(
self.table_metadata.schema(), self.row_filter, self.case_sensitive, self.options.get("include_empty_files") == "true"
).eval
min_data_sequence_number = _min_data_file_sequence_number(manifests)
data_entries: List[ManifestEntry] = []
positional_delete_entries = SortedList(key=lambda entry: entry.data_sequence_number or INITIAL_SEQUENCE_NUMBER)
executor = ExecutorFactory.get_or_create()
for manifest_entry in chain(
*executor.map(
lambda args: _open_manifest(*args),
[
(
self.io,
manifest,
partition_evaluators[manifest.partition_spec_id],
metrics_evaluator,
)
for manifest in manifests
if self._check_sequence_number(min_data_sequence_number, manifest)
],
)
):
data_file = manifest_entry.data_file
if data_file.content == DataFileContent.DATA:
data_entries.append(manifest_entry)
elif data_file.content == DataFileContent.POSITION_DELETES:
positional_delete_entries.add(manifest_entry)
elif data_file.content == DataFileContent.EQUALITY_DELETES:
raise ValueError("PyIceberg does not yet support equality deletes: https://github.com/apache/iceberg/issues/6568")
else:
raise ValueError(f"Unknown DataFileContent ({data_file.content}): {manifest_entry}")
return [
FileScanTask(
data_entry.data_file,
delete_files=_match_deletes_to_data_file(
data_entry,
positional_delete_entries,
),
)
for data_entry in data_entries
]
def to_arrow(self) -> pa.Table:
from pyiceberg.io.pyarrow import project_table
return project_table(
self.plan_files(),
self.table_metadata,
self.io,
self.row_filter,
self.projection(),
case_sensitive=self.case_sensitive,
limit=self.limit,
)
def to_pandas(self, **kwargs: Any) -> pd.DataFrame:
return self.to_arrow().to_pandas(**kwargs)
def to_duckdb(self, table_name: str, connection: Optional[DuckDBPyConnection] = None) -> DuckDBPyConnection:
import duckdb
con = connection or duckdb.connect(database=":memory:")
con.register(table_name, self.to_arrow())
return con
def to_ray(self) -> ray.data.dataset.Dataset:
import ray
return ray.data.from_arrow(self.to_arrow())
class MoveOperation(Enum):
First = 1
Before = 2
After = 3
@dataclass
class Move:
field_id: int
full_name: str
op: MoveOperation
other_field_id: Optional[int] = None
U = TypeVar("U")
class UpdateTableMetadata(ABC, Generic[U]):
_transaction: Transaction
def __init__(self, transaction: Transaction) -> None:
self._transaction = transaction
@abstractmethod
def _commit(self) -> UpdatesAndRequirements: ...
def commit(self) -> None:
self._transaction._apply(*self._commit())
def __exit__(self, _: Any, value: Any, traceback: Any) -> None:
"""Close and commit the change."""
self.commit()
def __enter__(self) -> U:
"""Update the table."""
return self # type: ignore
class UpdateSchema(UpdateTableMetadata["UpdateSchema"]):
_schema: Schema
_last_column_id: itertools.count[int]
_identifier_field_names: Set[str]
_adds: Dict[int, List[NestedField]] = {}
_updates: Dict[int, NestedField] = {}
_deletes: Set[int] = set()
_moves: Dict[int, List[Move]] = {}
_added_name_to_id: Dict[str, int] = {}
# Part of https://github.com/apache/iceberg/pull/8393
_id_to_parent: Dict[int, str] = {}
_allow_incompatible_changes: bool
_case_sensitive: bool
def __init__(
self,
transaction: Transaction,
allow_incompatible_changes: bool = False,
case_sensitive: bool = True,
schema: Optional[Schema] = None,
name_mapping: Optional[NameMapping] = None,
) -> None:
super().__init__(transaction)
if isinstance(schema, Schema):
self._schema = schema
self._last_column_id = itertools.count(1 + schema.highest_field_id)
else:
self._schema = self._transaction.table_metadata.schema()
self._last_column_id = itertools.count(1 + self._transaction.table_metadata.last_column_id)
self._name_mapping = name_mapping
self._identifier_field_names = self._schema.identifier_field_names()
self._adds = {}
self._updates = {}
self._deletes = set()
self._moves = {}
self._added_name_to_id = {}
def get_column_name(field_id: int) -> str:
column_name = self._schema.find_column_name(column_id=field_id)
if column_name is None:
raise ValueError(f"Could not find field-id: {field_id}")
return column_name
self._id_to_parent = {
field_id: get_column_name(parent_field_id) for field_id, parent_field_id in self._schema._lazy_id_to_parent.items()
}
self._allow_incompatible_changes = allow_incompatible_changes
self._case_sensitive = case_sensitive
self._transaction = transaction
def case_sensitive(self, case_sensitive: bool) -> UpdateSchema:
"""Determine if the case of schema needs to be considered when comparing column names.
Args:
case_sensitive: When false case is not considered in column name comparisons.
Returns:
This for method chaining
"""
self._case_sensitive = case_sensitive
return self
def union_by_name(self, new_schema: Union[Schema, "pa.Schema"]) -> UpdateSchema:
from pyiceberg.catalog import Catalog
visit_with_partner(
Catalog._convert_schema_if_needed(new_schema),
-1,
UnionByNameVisitor(update_schema=self, existing_schema=self._schema, case_sensitive=self._case_sensitive), # type: ignore
PartnerIdByNameAccessor(partner_schema=self._schema, case_sensitive=self._case_sensitive),
)
return self
def add_column(
self, path: Union[str, Tuple[str, ...]], field_type: IcebergType, doc: Optional[str] = None, required: bool = False
) -> UpdateSchema:
"""Add a new column to a nested struct or Add a new top-level column.
Because "." may be interpreted as a column path separator or may be used in field names, it
is not allowed to add nested column by passing in a string. To add to nested structures or
to add fields with names that contain "." use a tuple instead to indicate the path.
If type is a nested type, its field IDs are reassigned when added to the existing schema.
Args:
path: Name for the new column.
field_type: Type for the new column.
doc: Documentation string for the new column.
required: Whether the new column is required.
Returns:
This for method chaining.
"""
if isinstance(path, str):
if "." in path:
raise ValueError(f"Cannot add column with ambiguous name: {path}, provide a tuple instead")
path = (path,)
if required and not self._allow_incompatible_changes:
# Table format version 1 and 2 cannot add required column because there is no initial value
raise ValueError(f'Incompatible change: cannot add required column: {".".join(path)}')
name = path[-1]
parent = path[:-1]
full_name = ".".join(path)
parent_full_path = ".".join(parent)
parent_id: int = TABLE_ROOT_ID
if len(parent) > 0:
parent_field = self._schema.find_field(parent_full_path, self._case_sensitive)
parent_type = parent_field.field_type
if isinstance(parent_type, MapType):
parent_field = parent_type.value_field
elif isinstance(parent_type, ListType):
parent_field = parent_type.element_field
if not parent_field.field_type.is_struct:
raise ValueError(f"Cannot add column '{name}' to non-struct type: {parent_full_path}")
parent_id = parent_field.field_id
existing_field = None
try:
existing_field = self._schema.find_field(full_name, self._case_sensitive)
except ValueError:
pass
if existing_field is not None and existing_field.field_id not in self._deletes:
raise ValueError(f"Cannot add column, name already exists: {full_name}")
# assign new IDs in order
new_id = self.assign_new_column_id()
# update tracking for moves
self._added_name_to_id[full_name] = new_id
self._id_to_parent[new_id] = parent_full_path
new_type = assign_fresh_schema_ids(field_type, self.assign_new_column_id)
field = NestedField(field_id=new_id, name=name, field_type=new_type, required=required, doc=doc)
if parent_id in self._adds:
self._adds[parent_id].append(field)
else:
self._adds[parent_id] = [field]
return self
def delete_column(self, path: Union[str, Tuple[str, ...]]) -> UpdateSchema:
"""Delete a column from a table.
Args:
path: The path to the column.
Returns:
The UpdateSchema with the delete operation staged.
"""
name = (path,) if isinstance(path, str) else path
full_name = ".".join(name)
field = self._schema.find_field(full_name, case_sensitive=self._case_sensitive)
if field.field_id in self._adds:
raise ValueError(f"Cannot delete a column that has additions: {full_name}")
if field.field_id in self._updates:
raise ValueError(f"Cannot delete a column that has updates: {full_name}")
self._deletes.add(field.field_id)
return self
def rename_column(self, path_from: Union[str, Tuple[str, ...]], new_name: str) -> UpdateSchema:
"""Update the name of a column.
Args:
path_from: The path to the column to be renamed.
new_name: The new path of the column.
Returns:
The UpdateSchema with the rename operation staged.
"""
path_from = ".".join(path_from) if isinstance(path_from, tuple) else path_from
field_from = self._schema.find_field(path_from, self._case_sensitive)
if field_from.field_id in self._deletes:
raise ValueError(f"Cannot rename a column that will be deleted: {path_from}")
if updated := self._updates.get(field_from.field_id):
self._updates[field_from.field_id] = NestedField(
field_id=updated.field_id,
name=new_name,
field_type=updated.field_type,
doc=updated.doc,
required=updated.required,
)
else:
self._updates[field_from.field_id] = NestedField(
field_id=field_from.field_id,
name=new_name,
field_type=field_from.field_type,
doc=field_from.doc,
required=field_from.required,
)
# Lookup the field because of casing
from_field_correct_casing = self._schema.find_column_name(field_from.field_id)
if from_field_correct_casing in self._identifier_field_names:
self._identifier_field_names.remove(from_field_correct_casing)
new_identifier_path = f"{from_field_correct_casing[: -len(field_from.name)]}{new_name}"
self._identifier_field_names.add(new_identifier_path)
return self
def make_column_optional(self, path: Union[str, Tuple[str, ...]]) -> UpdateSchema:
"""Make a column optional.
Args:
path: The path to the field.
Returns:
The UpdateSchema with the requirement change staged.
"""
self._set_column_requirement(path, required=False)
return self
def set_identifier_fields(self, *fields: str) -> None:
self._identifier_field_names = set(fields)
def _set_column_requirement(self, path: Union[str, Tuple[str, ...]], required: bool) -> None:
path = (path,) if isinstance(path, str) else path
name = ".".join(path)
field = self._schema.find_field(name, self._case_sensitive)
if (field.required and required) or (field.optional and not required):
# if the change is a noop, allow it even if allowIncompatibleChanges is false
return
if not self._allow_incompatible_changes and required:
raise ValueError(f"Cannot change column nullability: {name}: optional -> required")
if field.field_id in self._deletes:
raise ValueError(f"Cannot update a column that will be deleted: {name}")
if updated := self._updates.get(field.field_id):
self._updates[field.field_id] = NestedField(
field_id=updated.field_id,
name=updated.name,
field_type=updated.field_type,
doc=updated.doc,
required=required,
)
else:
self._updates[field.field_id] = NestedField(
field_id=field.field_id,
name=field.name,
field_type=field.field_type,
doc=field.doc,
required=required,
)
def update_column(
self,
path: Union[str, Tuple[str, ...]],
field_type: Optional[IcebergType] = None,
required: Optional[bool] = None,
doc: Optional[str] = None,
) -> UpdateSchema:
"""Update the type of column.
Args:
path: The path to the field.
field_type: The new type
required: If the field should be required
doc: Documentation describing the column
Returns:
The UpdateSchema with the type update staged.
"""
path = (path,) if isinstance(path, str) else path
full_name = ".".join(path)
if field_type is None and required is None and doc is None:
return self
field = self._schema.find_field(full_name, self._case_sensitive)
if field.field_id in self._deletes:
raise ValueError(f"Cannot update a column that will be deleted: {full_name}")
if field_type is not None:
if not field.field_type.is_primitive:
raise ValidationError(f"Cannot change column type: {field.field_type} is not a primitive")
if not self._allow_incompatible_changes and field.field_type != field_type:
try:
promote(field.field_type, field_type)
except ResolveError as e:
raise ValidationError(f"Cannot change column type: {full_name}: {field.field_type} -> {field_type}") from e
if updated := self._updates.get(field.field_id):
self._updates[field.field_id] = NestedField(
field_id=updated.field_id,
name=updated.name,
field_type=field_type or updated.field_type,
doc=doc or updated.doc,
required=updated.required,
)
else:
self._updates[field.field_id] = NestedField(
field_id=field.field_id,
name=field.name,
field_type=field_type or field.field_type,
doc=doc or field.doc,
required=field.required,
)
if required is not None:
self._set_column_requirement(path, required=required)
return self
def _find_for_move(self, name: str) -> Optional[int]:
try:
return self._schema.find_field(name, self._case_sensitive).field_id
except ValueError:
pass
return self._added_name_to_id.get(name)
def _move(self, move: Move) -> None:
if parent_name := self._id_to_parent.get(move.field_id):
parent_field = self._schema.find_field(parent_name, case_sensitive=self._case_sensitive)
if not parent_field.field_type.is_struct:
raise ValueError(f"Cannot move fields in non-struct type: {parent_field.field_type}")
if move.op == MoveOperation.After or move.op == MoveOperation.Before:
if move.other_field_id is None:
raise ValueError("Expected other field when performing before/after move")
if self._id_to_parent.get(move.field_id) != self._id_to_parent.get(move.other_field_id):
raise ValueError(f"Cannot move field {move.full_name} to a different struct")
self._moves[parent_field.field_id] = self._moves.get(parent_field.field_id, []) + [move]
else:
# In the top level field
if move.op == MoveOperation.After or move.op == MoveOperation.Before:
if move.other_field_id is None:
raise ValueError("Expected other field when performing before/after move")
if other_struct := self._id_to_parent.get(move.other_field_id):
raise ValueError(f"Cannot move field {move.full_name} to a different struct: {other_struct}")
self._moves[TABLE_ROOT_ID] = self._moves.get(TABLE_ROOT_ID, []) + [move]
def move_first(self, path: Union[str, Tuple[str, ...]]) -> UpdateSchema:
"""Move the field to the first position of the parent struct.
Args:
path: The path to the field.
Returns:
The UpdateSchema with the move operation staged.
"""
full_name = ".".join(path) if isinstance(path, tuple) else path
field_id = self._find_for_move(full_name)
if field_id is None:
raise ValueError(f"Cannot move missing column: {full_name}")
self._move(Move(field_id=field_id, full_name=full_name, op=MoveOperation.First))
return self
def move_before(self, path: Union[str, Tuple[str, ...]], before_path: Union[str, Tuple[str, ...]]) -> UpdateSchema:
"""Move the field to before another field.
Args:
path: The path to the field.
Returns:
The UpdateSchema with the move operation staged.
"""
full_name = ".".join(path) if isinstance(path, tuple) else path
field_id = self._find_for_move(full_name)
if field_id is None:
raise ValueError(f"Cannot move missing column: {full_name}")
before_full_name = (
".".join(
before_path,
)
if isinstance(before_path, tuple)
else before_path
)
before_field_id = self._find_for_move(before_full_name)
if before_field_id is None:
raise ValueError(f"Cannot move {full_name} before missing column: {before_full_name}")
if field_id == before_field_id:
raise ValueError(f"Cannot move {full_name} before itself")
self._move(Move(field_id=field_id, full_name=full_name, other_field_id=before_field_id, op=MoveOperation.Before))
return self
def move_after(self, path: Union[str, Tuple[str, ...]], after_name: Union[str, Tuple[str, ...]]) -> UpdateSchema:
"""Move the field to after another field.
Args:
path: The path to the field.
Returns:
The UpdateSchema with the move operation staged.
"""
full_name = ".".join(path) if isinstance(path, tuple) else path
field_id = self._find_for_move(full_name)
if field_id is None:
raise ValueError(f"Cannot move missing column: {full_name}")
after_path = ".".join(after_name) if isinstance(after_name, tuple) else after_name
after_field_id = self._find_for_move(after_path)
if after_field_id is None:
raise ValueError(f"Cannot move {full_name} after missing column: {after_path}")
if field_id == after_field_id:
raise ValueError(f"Cannot move {full_name} after itself")
self._move(Move(field_id=field_id, full_name=full_name, other_field_id=after_field_id, op=MoveOperation.After))
return self
def _commit(self) -> UpdatesAndRequirements:
"""Apply the pending changes and commit."""
new_schema = self._apply()
existing_schema_id = next(
(schema.schema_id for schema in self._transaction.table_metadata.schemas if schema == new_schema), None
)
requirements: Tuple[TableRequirement, ...] = ()
updates: Tuple[TableUpdate, ...] = ()
# Check if it is different current schema ID
if existing_schema_id != self._schema.schema_id:
requirements += (AssertCurrentSchemaId(current_schema_id=self._schema.schema_id),)
if existing_schema_id is None:
last_column_id = max(self._transaction.table_metadata.last_column_id, new_schema.highest_field_id)
updates += (
AddSchemaUpdate(schema=new_schema, last_column_id=last_column_id),
SetCurrentSchemaUpdate(schema_id=-1),
)
else:
updates += (SetCurrentSchemaUpdate(schema_id=existing_schema_id),)
if name_mapping := self._name_mapping:
updated_name_mapping = update_mapping(name_mapping, self._updates, self._adds)
updates += (
SetPropertiesUpdate(updates={TableProperties.DEFAULT_NAME_MAPPING: updated_name_mapping.model_dump_json()}),
)
return updates, requirements
def _apply(self) -> Schema:
"""Apply the pending changes to the original schema and returns the result.
Returns:
the result Schema when all pending updates are applied
"""
struct = visit(self._schema, _ApplyChanges(self._adds, self._updates, self._deletes, self._moves))
if struct is None:
# Should never happen
raise ValueError("Could not apply changes")
# Check the field-ids
new_schema = Schema(*struct.fields)
field_ids = set()
for name in self._identifier_field_names:
try:
field = new_schema.find_field(name, case_sensitive=self._case_sensitive)
except ValueError as e:
raise ValueError(
f"Cannot find identifier field {name}. In case of deletion, update the identifier fields first."
) from e
field_ids.add(field.field_id)
if txn := self._transaction:
next_schema_id = 1 + (
max(schema.schema_id for schema in txn.table_metadata.schemas) if txn.table_metadata is not None else 0
)
else:
next_schema_id = 0
return Schema(*struct.fields, schema_id=next_schema_id, identifier_field_ids=field_ids)
def assign_new_column_id(self) -> int:
return next(self._last_column_id)
class _ApplyChanges(SchemaVisitor[Optional[IcebergType]]):
_adds: Dict[int, List[NestedField]]
_updates: Dict[int, NestedField]
_deletes: Set[int]
_moves: Dict[int, List[Move]]
def __init__(
self, adds: Dict[int, List[NestedField]], updates: Dict[int, NestedField], deletes: Set[int], moves: Dict[int, List[Move]]
) -> None:
self._adds = adds
self._updates = updates
self._deletes = deletes
self._moves = moves
def schema(self, schema: Schema, struct_result: Optional[IcebergType]) -> Optional[IcebergType]:
added = self._adds.get(TABLE_ROOT_ID)
moves = self._moves.get(TABLE_ROOT_ID)
if added is not None or moves is not None:
if not isinstance(struct_result, StructType):
raise ValueError(f"Cannot add fields to non-struct: {struct_result}")
if new_fields := _add_and_move_fields(struct_result.fields, added or [], moves or []):
return StructType(*new_fields)
return struct_result
def struct(self, struct: StructType, field_results: List[Optional[IcebergType]]) -> Optional[IcebergType]:
has_changes = False
new_fields = []
for idx, result_type in enumerate(field_results):
result_type = field_results[idx]
# Has been deleted
if result_type is None:
has_changes = True
continue
field = struct.fields[idx]
name = field.name
doc = field.doc
required = field.required
# There is an update
if update := self._updates.get(field.field_id):
name = update.name
doc = update.doc
required = update.required
if field.name == name and field.field_type == result_type and field.required == required and field.doc == doc:
new_fields.append(field)
else:
has_changes = True
new_fields.append(
NestedField(field_id=field.field_id, name=name, field_type=result_type, required=required, doc=doc)
)
if has_changes:
return StructType(*new_fields)
return struct
def field(self, field: NestedField, field_result: Optional[IcebergType]) -> Optional[IcebergType]:
# the API validates deletes, updates, and additions don't conflict handle deletes
if field.field_id in self._deletes:
return None
# handle updates
if (update := self._updates.get(field.field_id)) and field.field_type != update.field_type:
return update.field_type
if isinstance(field_result, StructType):
# handle add & moves
added = self._adds.get(field.field_id)
moves = self._moves.get(field.field_id)
if added is not None or moves is not None:
if not isinstance(field.field_type, StructType):
raise ValueError(f"Cannot add fields to non-struct: {field}")
if new_fields := _add_and_move_fields(field_result.fields, added or [], moves or []):
return StructType(*new_fields)
return field_result
def list(self, list_type: ListType, element_result: Optional[IcebergType]) -> Optional[IcebergType]:
element_type = self.field(list_type.element_field, element_result)
if element_type is None:
raise ValueError(f"Cannot delete element type from list: {element_result}")
return ListType(element_id=list_type.element_id, element=element_type, element_required=list_type.element_required)
def map(
self, map_type: MapType, key_result: Optional[IcebergType], value_result: Optional[IcebergType]
) -> Optional[IcebergType]:
key_id: int = map_type.key_field.field_id
if key_id in self._deletes:
raise ValueError(f"Cannot delete map keys: {map_type}")
if key_id in self._updates:
raise ValueError(f"Cannot update map keys: {map_type}")
if key_id in self._adds:
raise ValueError(f"Cannot add fields to map keys: {map_type}")
if map_type.key_type != key_result:
raise ValueError(f"Cannot alter map keys: {map_type}")
value_field: NestedField = map_type.value_field
value_type = self.field(value_field, value_result)
if value_type is None:
raise ValueError(f"Cannot delete value type from map: {value_field}")
return MapType(
key_id=map_type.key_id,
key_type=map_type.key_type,
value_id=map_type.value_id,
value_type=value_type,
value_required=map_type.value_required,
)
def primitive(self, primitive: PrimitiveType) -> Optional[IcebergType]:
return primitive
class UnionByNameVisitor(SchemaWithPartnerVisitor[int, bool]):
update_schema: UpdateSchema
existing_schema: Schema
case_sensitive: bool
def __init__(self, update_schema: UpdateSchema, existing_schema: Schema, case_sensitive: bool) -> None:
self.update_schema = update_schema
self.existing_schema = existing_schema
self.case_sensitive = case_sensitive
def schema(self, schema: Schema, partner_id: Optional[int], struct_result: bool) -> bool:
return struct_result
def struct(self, struct: StructType, partner_id: Optional[int], missing_positions: List[bool]) -> bool:
if partner_id is None:
return True
fields = struct.fields
partner_struct = self._find_field_type(partner_id)
if not partner_struct.is_struct:
raise ValueError(f"Expected a struct, got: {partner_struct}")
for pos, missing in enumerate(missing_positions):
if missing:
self._add_column(partner_id, fields[pos])
else:
field = fields[pos]
if nested_field := partner_struct.field_by_name(field.name, case_sensitive=self.case_sensitive):
self._update_column(field, nested_field)
return False
def _add_column(self, parent_id: int, field: NestedField) -> None:
if parent_name := self.existing_schema.find_column_name(parent_id):
path: Tuple[str, ...] = (parent_name, field.name)
else:
path = (field.name,)
self.update_schema.add_column(path=path, field_type=field.field_type, required=field.required, doc=field.doc)
def _update_column(self, field: NestedField, existing_field: NestedField) -> None:
full_name = self.existing_schema.find_column_name(existing_field.field_id)
if full_name is None:
raise ValueError(f"Could not find field: {existing_field}")
if field.optional and existing_field.required:
self.update_schema.make_column_optional(full_name)
if field.field_type.is_primitive and field.field_type != existing_field.field_type:
self.update_schema.update_column(full_name, field_type=field.field_type)
if field.doc is not None and not field.doc != existing_field.doc:
self.update_schema.update_column(full_name, doc=field.doc)
def _find_field_type(self, field_id: int) -> IcebergType:
if field_id == -1:
return self.existing_schema.as_struct()
else:
return self.existing_schema.find_field(field_id).field_type
def field(self, field: NestedField, partner_id: Optional[int], field_result: bool) -> bool:
return partner_id is None
def list(self, list_type: ListType, list_partner_id: Optional[int], element_missing: bool) -> bool:
if list_partner_id is None:
return True
if element_missing:
raise ValueError("Error traversing schemas: element is missing, but list is present")
partner_list_type = self._find_field_type(list_partner_id)
if not isinstance(partner_list_type, ListType):
raise ValueError(f"Expected list-type, got: {partner_list_type}")
self._update_column(list_type.element_field, partner_list_type.element_field)
return False
def map(self, map_type: MapType, map_partner_id: Optional[int], key_missing: bool, value_missing: bool) -> bool:
if map_partner_id is None:
return True
if key_missing:
raise ValueError("Error traversing schemas: key is missing, but map is present")
if value_missing:
raise ValueError("Error traversing schemas: value is missing, but map is present")
partner_map_type = self._find_field_type(map_partner_id)
if not isinstance(partner_map_type, MapType):
raise ValueError(f"Expected map-type, got: {partner_map_type}")
self._update_column(map_type.key_field, partner_map_type.key_field)
self._update_column(map_type.value_field, partner_map_type.value_field)
return False
def primitive(self, primitive: PrimitiveType, primitive_partner_id: Optional[int]) -> bool:
return primitive_partner_id is None
class PartnerIdByNameAccessor(PartnerAccessor[int]):
partner_schema: Schema
case_sensitive: bool
def __init__(self, partner_schema: Schema, case_sensitive: bool) -> None:
self.partner_schema = partner_schema
self.case_sensitive = case_sensitive
def schema_partner(self, partner: Optional[int]) -> Optional[int]:
return -1
def field_partner(self, partner_field_id: Optional[int], field_id: int, field_name: str) -> Optional[int]:
if partner_field_id is not None:
if partner_field_id == -1:
struct = self.partner_schema.as_struct()
else:
struct = self.partner_schema.find_field(partner_field_id).field_type
if not struct.is_struct:
raise ValueError(f"Expected StructType: {struct}")
if field := struct.field_by_name(name=field_name, case_sensitive=self.case_sensitive):
return field.field_id
return None
def list_element_partner(self, partner_list_id: Optional[int]) -> Optional[int]:
if partner_list_id is not None and (field := self.partner_schema.find_field(partner_list_id)):
if not isinstance(field.field_type, ListType):
raise ValueError(f"Expected ListType: {field}")
return field.field_type.element_field.field_id
else:
return None
def map_key_partner(self, partner_map_id: Optional[int]) -> Optional[int]:
if partner_map_id is not None and (field := self.partner_schema.find_field(partner_map_id)):
if not isinstance(field.field_type, MapType):
raise ValueError(f"Expected MapType: {field}")
return field.field_type.key_field.field_id
else:
return None
def map_value_partner(self, partner_map_id: Optional[int]) -> Optional[int]:
if partner_map_id is not None and (field := self.partner_schema.find_field(partner_map_id)):
if not isinstance(field.field_type, MapType):
raise ValueError(f"Expected MapType: {field}")
return field.field_type.value_field.field_id
else:
return None
def _add_fields(fields: Tuple[NestedField, ...], adds: Optional[List[NestedField]]) -> Tuple[NestedField, ...]:
adds = adds or []
return fields + tuple(adds)
def _move_fields(fields: Tuple[NestedField, ...], moves: List[Move]) -> Tuple[NestedField, ...]:
reordered = list(copy(fields))
for move in moves:
# Find the field that we're about to move
field = next(field for field in reordered if field.field_id == move.field_id)
# Remove the field that we're about to move from the list
reordered = [field for field in reordered if field.field_id != move.field_id]
if move.op == MoveOperation.First:
reordered = [field] + reordered
elif move.op == MoveOperation.Before or move.op == MoveOperation.After:
other_field_id = move.other_field_id
other_field_pos = next(i for i, field in enumerate(reordered) if field.field_id == other_field_id)
if move.op == MoveOperation.Before:
reordered.insert(other_field_pos, field)
else:
reordered.insert(other_field_pos + 1, field)
else:
raise ValueError(f"Unknown operation: {move.op}")
return tuple(reordered)
def _add_and_move_fields(
fields: Tuple[NestedField, ...], adds: List[NestedField], moves: List[Move]
) -> Optional[Tuple[NestedField, ...]]:
if len(adds) > 0:
# always apply adds first so that added fields can be moved
added = _add_fields(fields, adds)
if len(moves) > 0:
return _move_fields(added, moves)
else:
return added
elif len(moves) > 0:
return _move_fields(fields, moves)
return None if len(adds) == 0 else tuple(*fields, *adds)
@dataclass(frozen=True)
class WriteTask:
write_uuid: uuid.UUID
task_id: int
schema: Schema
record_batches: List[pa.RecordBatch]
sort_order_id: Optional[int] = None
partition_key: Optional[PartitionKey] = None
def generate_data_file_filename(self, extension: str) -> str:
# Mimics the behavior in the Java API:
# https://github.com/apache/iceberg/blob/a582968975dd30ff4917fbbe999f1be903efac02/core/src/main/java/org/apache/iceberg/io/OutputFileFactory.java#L92-L101
return f"00000-{self.task_id}-{self.write_uuid}.{extension}"
def generate_data_file_path(self, extension: str) -> str:
if self.partition_key:
file_path = f"{self.partition_key.to_path()}/{self.generate_data_file_filename(extension)}"
return file_path
else:
return self.generate_data_file_filename(extension)
@dataclass(frozen=True)
class AddFileTask:
file_path: str
partition_field_value: Record
def _new_manifest_path(location: str, num: int, commit_uuid: uuid.UUID) -> str:
return f"{location}/metadata/{commit_uuid}-m{num}.avro"
def _generate_manifest_list_path(location: str, snapshot_id: int, attempt: int, commit_uuid: uuid.UUID) -> str:
# Mimics the behavior in Java:
# https://github.com/apache/iceberg/blob/c862b9177af8e2d83122220764a056f3b96fd00c/core/src/main/java/org/apache/iceberg/SnapshotProducer.java#L491
return f"{location}/metadata/snap-{snapshot_id}-{attempt}-{commit_uuid}.avro"
def _dataframe_to_data_files(
table_metadata: TableMetadata, df: pa.Table, io: FileIO, write_uuid: Optional[uuid.UUID] = None
) -> Iterable[DataFile]:
"""Convert a PyArrow table into a DataFile.
Returns:
An iterable that supplies datafiles that represent the table.
"""
from pyiceberg.io.pyarrow import bin_pack_arrow_table, write_file
counter = itertools.count(0)
write_uuid = write_uuid or uuid.uuid4()
target_file_size: int = PropertyUtil.property_as_int( # type: ignore # The property is set with non-None value.
properties=table_metadata.properties,
property_name=TableProperties.WRITE_TARGET_FILE_SIZE_BYTES,
default=TableProperties.WRITE_TARGET_FILE_SIZE_BYTES_DEFAULT,
)
if len(table_metadata.spec().fields) > 0:
partitions = _determine_partitions(spec=table_metadata.spec(), schema=table_metadata.schema(), arrow_table=df)
yield from write_file(
io=io,
table_metadata=table_metadata,
tasks=iter([
WriteTask(
write_uuid=write_uuid,
task_id=next(counter),
record_batches=batches,
partition_key=partition.partition_key,
schema=table_metadata.schema(),
)
for partition in partitions
for batches in bin_pack_arrow_table(partition.arrow_table_partition, target_file_size)
]),
)
else:
yield from write_file(
io=io,
table_metadata=table_metadata,
tasks=iter([
WriteTask(write_uuid=write_uuid, task_id=next(counter), record_batches=batches, schema=table_metadata.schema())
for batches in bin_pack_arrow_table(df, target_file_size)
]),
)
def _parquet_files_to_data_files(table_metadata: TableMetadata, file_paths: List[str], io: FileIO) -> Iterable[DataFile]:
"""Convert a list files into DataFiles.
Returns:
An iterable that supplies DataFiles that describe the parquet files.
"""
from pyiceberg.io.pyarrow import parquet_files_to_data_files
yield from parquet_files_to_data_files(io=io, table_metadata=table_metadata, file_paths=iter(file_paths))
class _MergingSnapshotProducer(UpdateTableMetadata["_MergingSnapshotProducer"]):
commit_uuid: uuid.UUID
_operation: Operation
_snapshot_id: int
_parent_snapshot_id: Optional[int]
_added_data_files: List[DataFile]
def __init__(
self,
operation: Operation,
transaction: Transaction,
io: FileIO,
commit_uuid: Optional[uuid.UUID] = None,
snapshot_properties: Dict[str, str] = EMPTY_DICT,
) -> None:
super().__init__(transaction)
self.commit_uuid = commit_uuid or uuid.uuid4()
self._io = io
self._operation = operation
self._snapshot_id = self._transaction.table_metadata.new_snapshot_id()
# Since we only support the main branch for now
self._parent_snapshot_id = (
snapshot.snapshot_id if (snapshot := self._transaction.table_metadata.current_snapshot()) else None
)
self._added_data_files = []
self.snapshot_properties = snapshot_properties
def append_data_file(self, data_file: DataFile) -> _MergingSnapshotProducer:
self._added_data_files.append(data_file)
return self
@abstractmethod
def _deleted_entries(self) -> List[ManifestEntry]: ...
@abstractmethod
def _existing_manifests(self) -> List[ManifestFile]: ...
def _manifests(self) -> List[ManifestFile]:
def _write_added_manifest() -> List[ManifestFile]:
if self._added_data_files:
output_file_location = _new_manifest_path(
location=self._transaction.table_metadata.location, num=0, commit_uuid=self.commit_uuid
)
with write_manifest(
format_version=self._transaction.table_metadata.format_version,
spec=self._transaction.table_metadata.spec(),
schema=self._transaction.table_metadata.schema(),
output_file=self._io.new_output(output_file_location),
snapshot_id=self._snapshot_id,
) as writer:
for data_file in self._added_data_files:
writer.add_entry(
ManifestEntry(
status=ManifestEntryStatus.ADDED,
snapshot_id=self._snapshot_id,
data_sequence_number=None,
file_sequence_number=None,
data_file=data_file,
)
)
return [writer.to_manifest_file()]
else:
return []
def _write_delete_manifest() -> List[ManifestFile]:
# Check if we need to mark the files as deleted
deleted_entries = self._deleted_entries()
if len(deleted_entries) > 0:
output_file_location = _new_manifest_path(
location=self._transaction.table_metadata.location, num=1, commit_uuid=self.commit_uuid
)
with write_manifest(
format_version=self._transaction.table_metadata.format_version,
spec=self._transaction.table_metadata.spec(),
schema=self._transaction.table_metadata.schema(),
output_file=self._io.new_output(output_file_location),
snapshot_id=self._snapshot_id,
) as writer:
for delete_entry in deleted_entries:
writer.add_entry(delete_entry)
return [writer.to_manifest_file()]
else:
return []
executor = ExecutorFactory.get_or_create()
added_manifests = executor.submit(_write_added_manifest)
delete_manifests = executor.submit(_write_delete_manifest)
existing_manifests = executor.submit(self._existing_manifests)
return added_manifests.result() + delete_manifests.result() + existing_manifests.result()
def _summary(self, snapshot_properties: Dict[str, str] = EMPTY_DICT) -> Summary:
ssc = SnapshotSummaryCollector()
partition_summary_limit = int(
self._transaction.table_metadata.properties.get(
TableProperties.WRITE_PARTITION_SUMMARY_LIMIT, TableProperties.WRITE_PARTITION_SUMMARY_LIMIT_DEFAULT
)
)
ssc.set_partition_summary_limit(partition_summary_limit)
for data_file in self._added_data_files:
ssc.add_file(
data_file=data_file,
partition_spec=self._transaction.table_metadata.spec(),
schema=self._transaction.table_metadata.schema(),
)
previous_snapshot = (
self._transaction.table_metadata.snapshot_by_id(self._parent_snapshot_id)
if self._parent_snapshot_id is not None
else None
)
return update_snapshot_summaries(
summary=Summary(operation=self._operation, **ssc.build(), **snapshot_properties),
previous_summary=previous_snapshot.summary if previous_snapshot is not None else None,
truncate_full_table=self._operation == Operation.OVERWRITE,
)
def _commit(self) -> UpdatesAndRequirements:
new_manifests = self._manifests()
next_sequence_number = self._transaction.table_metadata.next_sequence_number()
summary = self._summary(self.snapshot_properties)
manifest_list_file_path = _generate_manifest_list_path(
location=self._transaction.table_metadata.location,
snapshot_id=self._snapshot_id,
attempt=0,
commit_uuid=self.commit_uuid,
)
with write_manifest_list(
format_version=self._transaction.table_metadata.format_version,
output_file=self._io.new_output(manifest_list_file_path),
snapshot_id=self._snapshot_id,
parent_snapshot_id=self._parent_snapshot_id,
sequence_number=next_sequence_number,
) as writer:
writer.add_manifests(new_manifests)
snapshot = Snapshot(
snapshot_id=self._snapshot_id,
parent_snapshot_id=self._parent_snapshot_id,
manifest_list=manifest_list_file_path,
sequence_number=next_sequence_number,
summary=summary,
schema_id=self._transaction.table_metadata.current_schema_id,
)
return (
(
AddSnapshotUpdate(snapshot=snapshot),
SetSnapshotRefUpdate(
snapshot_id=self._snapshot_id, parent_snapshot_id=self._parent_snapshot_id, ref_name="main", type="branch"
),
),
(AssertRefSnapshotId(snapshot_id=self._parent_snapshot_id, ref="main"),),
)
class FastAppendFiles(_MergingSnapshotProducer):
def _existing_manifests(self) -> List[ManifestFile]:
"""To determine if there are any existing manifest files.
A fast append will add another ManifestFile to the ManifestList.
All the existing manifest files are considered existing.
"""
existing_manifests = []
if self._parent_snapshot_id is not None:
previous_snapshot = self._transaction.table_metadata.snapshot_by_id(self._parent_snapshot_id)
if previous_snapshot is None:
raise ValueError(f"Snapshot could not be found: {self._parent_snapshot_id}")
for manifest in previous_snapshot.manifests(io=self._io):
if manifest.has_added_files() or manifest.has_existing_files() or manifest.added_snapshot_id == self._snapshot_id:
existing_manifests.append(manifest)
return existing_manifests
def _deleted_entries(self) -> List[ManifestEntry]:
"""To determine if we need to record any deleted manifest entries.
In case of an append, nothing is deleted.
"""
return []
class OverwriteFiles(_MergingSnapshotProducer):
def _existing_manifests(self) -> List[ManifestFile]:
"""To determine if there are any existing manifest files.
In the of a full overwrite, all the previous manifests are
considered deleted.
"""
return []
def _deleted_entries(self) -> List[ManifestEntry]:
"""To determine if we need to record any deleted entries.
With a full overwrite all the entries are considered deleted.
With partial overwrites we have to use the predicate to evaluate
which entries are affected.
"""
if self._parent_snapshot_id is not None:
previous_snapshot = self._transaction.table_metadata.snapshot_by_id(self._parent_snapshot_id)
if previous_snapshot is None:
# This should never happen since you cannot overwrite an empty table
raise ValueError(f"Could not find the previous snapshot: {self._parent_snapshot_id}")
executor = ExecutorFactory.get_or_create()
def _get_entries(manifest: ManifestFile) -> List[ManifestEntry]:
return [
ManifestEntry(
status=ManifestEntryStatus.DELETED,
snapshot_id=entry.snapshot_id,
data_sequence_number=entry.data_sequence_number,
file_sequence_number=entry.file_sequence_number,
data_file=entry.data_file,
)
for entry in manifest.fetch_manifest_entry(self._io, discard_deleted=True)
if entry.data_file.content == DataFileContent.DATA
]
list_of_entries = executor.map(_get_entries, previous_snapshot.manifests(self._io))
return list(chain(*list_of_entries))
else:
return []
class UpdateSnapshot:
_transaction: Transaction
_io: FileIO
_snapshot_properties: Dict[str, str]
def __init__(self, transaction: Transaction, io: FileIO, snapshot_properties: Dict[str, str]) -> None:
self._transaction = transaction
self._io = io
self._snapshot_properties = snapshot_properties
def fast_append(self) -> FastAppendFiles:
return FastAppendFiles(
operation=Operation.APPEND, transaction=self._transaction, io=self._io, snapshot_properties=self._snapshot_properties
)
def overwrite(self) -> OverwriteFiles:
return OverwriteFiles(
operation=Operation.OVERWRITE
if self._transaction.table_metadata.current_snapshot() is not None
else Operation.APPEND,
transaction=self._transaction,
io=self._io,
snapshot_properties=self._snapshot_properties,
)
class UpdateSpec(UpdateTableMetadata["UpdateSpec"]):
_transaction: Transaction
_name_to_field: Dict[str, PartitionField] = {}
_name_to_added_field: Dict[str, PartitionField] = {}
_transform_to_field: Dict[Tuple[int, str], PartitionField] = {}
_transform_to_added_field: Dict[Tuple[int, str], PartitionField] = {}
_renames: Dict[str, str] = {}
_added_time_fields: Dict[int, PartitionField] = {}
_case_sensitive: bool
_adds: List[PartitionField]
_deletes: Set[int]
_last_assigned_partition_id: int
def __init__(self, transaction: Transaction, case_sensitive: bool = True) -> None:
super().__init__(transaction)
self._name_to_field = {field.name: field for field in transaction.table_metadata.spec().fields}
self._name_to_added_field = {}
self._transform_to_field = {
(field.source_id, repr(field.transform)): field for field in transaction.table_metadata.spec().fields
}
self._transform_to_added_field = {}
self._adds = []
self._deletes = set()
self._last_assigned_partition_id = transaction.table_metadata.last_partition_id or PARTITION_FIELD_ID_START - 1
self._renames = {}
self._transaction = transaction
self._case_sensitive = case_sensitive
self._added_time_fields = {}
def add_field(
self,
source_column_name: str,
transform: Transform[Any, Any],
partition_field_name: Optional[str] = None,
) -> UpdateSpec:
ref = Reference(source_column_name)
bound_ref = ref.bind(self._transaction.table_metadata.schema(), self._case_sensitive)
# verify transform can actually bind it
output_type = bound_ref.field.field_type
if not transform.can_transform(output_type):
raise ValueError(f"{transform} cannot transform {output_type} values from {bound_ref.field.name}")
transform_key = (bound_ref.field.field_id, repr(transform))
existing_partition_field = self._transform_to_field.get(transform_key)
if existing_partition_field and self._is_duplicate_partition(transform, existing_partition_field):
raise ValueError(f"Duplicate partition field for ${ref.name}=${ref}, ${existing_partition_field} already exists")
added = self._transform_to_added_field.get(transform_key)
if added:
raise ValueError(f"Already added partition: {added.name}")
new_field = self._partition_field((bound_ref.field.field_id, transform), partition_field_name)
if new_field.name in self._name_to_added_field:
raise ValueError(f"Already added partition field with name: {new_field.name}")
if isinstance(new_field.transform, TimeTransform):
existing_time_field = self._added_time_fields.get(new_field.source_id)
if existing_time_field:
raise ValueError(f"Cannot add time partition field: {new_field.name} conflicts with {existing_time_field.name}")
self._added_time_fields[new_field.source_id] = new_field
self._transform_to_added_field[transform_key] = new_field
existing_partition_field = self._name_to_field.get(new_field.name)
if existing_partition_field and new_field.field_id not in self._deletes:
if isinstance(existing_partition_field.transform, VoidTransform):
self.rename_field(
existing_partition_field.name, existing_partition_field.name + "_" + str(existing_partition_field.field_id)
)
else:
raise ValueError(f"Cannot add duplicate partition field name: {existing_partition_field.name}")
self._name_to_added_field[new_field.name] = new_field
self._adds.append(new_field)
return self
def add_identity(self, source_column_name: str) -> UpdateSpec:
return self.add_field(source_column_name, IdentityTransform(), None)
def remove_field(self, name: str) -> UpdateSpec:
added = self._name_to_added_field.get(name)
if added:
raise ValueError(f"Cannot delete newly added field {name}")
renamed = self._renames.get(name)
if renamed:
raise ValueError(f"Cannot rename and delete field {name}")
field = self._name_to_field.get(name)
if not field:
raise ValueError(f"No such partition field: {name}")
self._deletes.add(field.field_id)
return self
def rename_field(self, name: str, new_name: str) -> UpdateSpec:
existing_field = self._name_to_field.get(new_name)
if existing_field and isinstance(existing_field.transform, VoidTransform):
return self.rename_field(name, name + "_" + str(existing_field.field_id))
added = self._name_to_added_field.get(name)
if added:
raise ValueError("Cannot rename recently added partitions")
field = self._name_to_field.get(name)
if not field:
raise ValueError(f"Cannot find partition field {name}")
if field.field_id in self._deletes:
raise ValueError(f"Cannot delete and rename partition field {name}")
self._renames[name] = new_name
return self
def _commit(self) -> UpdatesAndRequirements:
new_spec = self._apply()
updates: Tuple[TableUpdate, ...] = ()
requirements: Tuple[TableRequirement, ...] = ()
if self._transaction.table_metadata.default_spec_id != new_spec.spec_id:
if new_spec.spec_id not in self._transaction.table_metadata.specs():
updates = (
AddPartitionSpecUpdate(spec=new_spec),
SetDefaultSpecUpdate(spec_id=-1),
)
else:
updates = (SetDefaultSpecUpdate(spec_id=new_spec.spec_id),)
required_last_assigned_partitioned_id = self._transaction.table_metadata.last_partition_id
requirements = (AssertLastAssignedPartitionId(last_assigned_partition_id=required_last_assigned_partitioned_id),)
return updates, requirements
def _apply(self) -> PartitionSpec:
def _check_and_add_partition_name(schema: Schema, name: str, source_id: int, partition_names: Set[str]) -> None:
try:
field = schema.find_field(name)
except ValueError:
field = None
if source_id is not None and field is not None and field.field_id != source_id:
raise ValueError(f"Cannot create identity partition from a different field in the schema {name}")
elif field is not None and source_id != field.field_id:
raise ValueError(f"Cannot create partition from name that exists in schema {name}")
if not name:
raise ValueError("Undefined name")
if name in partition_names:
raise ValueError(f"Partition name has to be unique: {name}")
partition_names.add(name)
def _add_new_field(
schema: Schema, source_id: int, field_id: int, name: str, transform: Transform[Any, Any], partition_names: Set[str]
) -> PartitionField:
_check_and_add_partition_name(schema, name, source_id, partition_names)
return PartitionField(source_id, field_id, transform, name)
partition_fields = []
partition_names: Set[str] = set()
for field in self._transaction.table_metadata.spec().fields:
if field.field_id not in self._deletes:
renamed = self._renames.get(field.name)
if renamed:
new_field = _add_new_field(
self._transaction.table_metadata.schema(),
field.source_id,
field.field_id,
renamed,
field.transform,
partition_names,
)
else:
new_field = _add_new_field(
self._transaction.table_metadata.schema(),
field.source_id,
field.field_id,
field.name,
field.transform,
partition_names,
)
partition_fields.append(new_field)
elif self._transaction.table_metadata.format_version == 1:
renamed = self._renames.get(field.name)
if renamed:
new_field = _add_new_field(
self._transaction.table_metadata.schema(),
field.source_id,
field.field_id,
renamed,
VoidTransform(),
partition_names,
)
else:
new_field = _add_new_field(
self._transaction.table_metadata.schema(),
field.source_id,
field.field_id,
field.name,
VoidTransform(),
partition_names,
)
partition_fields.append(new_field)
for added_field in self._adds:
new_field = PartitionField(
source_id=added_field.source_id,
field_id=added_field.field_id,
transform=added_field.transform,
name=added_field.name,
)
partition_fields.append(new_field)
# Reuse spec id or create a new one.
new_spec = PartitionSpec(*partition_fields)
new_spec_id = INITIAL_PARTITION_SPEC_ID
for spec in self._transaction.table_metadata.specs().values():
if new_spec.compatible_with(spec):
new_spec_id = spec.spec_id
break
elif new_spec_id <= spec.spec_id:
new_spec_id = spec.spec_id + 1
return PartitionSpec(*partition_fields, spec_id=new_spec_id)
def _partition_field(self, transform_key: Tuple[int, Transform[Any, Any]], name: Optional[str]) -> PartitionField:
if self._transaction.table_metadata.format_version == 2:
source_id, transform = transform_key
historical_fields = []
for spec in self._transaction.table_metadata.specs().values():
for field in spec.fields:
historical_fields.append((field.source_id, field.field_id, repr(field.transform), field.name))
for field_key in historical_fields:
if field_key[0] == source_id and field_key[2] == repr(transform):
if name is None or field_key[3] == name:
return PartitionField(source_id, field_key[1], transform, name)
new_field_id = self._new_field_id()
if name is None:
tmp_field = PartitionField(transform_key[0], new_field_id, transform_key[1], "unassigned_field_name")
name = _visit_partition_field(self._transaction.table_metadata.schema(), tmp_field, _PartitionNameGenerator())
return PartitionField(transform_key[0], new_field_id, transform_key[1], name)
def _new_field_id(self) -> int:
self._last_assigned_partition_id += 1
return self._last_assigned_partition_id
def _is_duplicate_partition(self, transform: Transform[Any, Any], partition_field: PartitionField) -> bool:
return partition_field.field_id not in self._deletes and partition_field.transform == transform
class InspectTable:
tbl: Table
def __init__(self, tbl: Table) -> None:
self.tbl = tbl
try:
import pyarrow as pa # noqa
except ModuleNotFoundError as e:
raise ModuleNotFoundError("For metadata operations PyArrow needs to be installed") from e
def _get_snapshot(self, snapshot_id: Optional[int] = None) -> Snapshot:
if snapshot_id is not None:
if snapshot := self.tbl.metadata.snapshot_by_id(snapshot_id):
return snapshot
else:
raise ValueError(f"Cannot find snapshot with ID {snapshot_id}")
if snapshot := self.tbl.metadata.current_snapshot():
return snapshot
else:
raise ValueError("Cannot get a snapshot as the table does not have any.")
def snapshots(self) -> "pa.Table":
import pyarrow as pa
snapshots_schema = pa.schema([
pa.field("committed_at", pa.timestamp(unit="ms"), nullable=False),
pa.field("snapshot_id", pa.int64(), nullable=False),
pa.field("parent_id", pa.int64(), nullable=True),
pa.field("operation", pa.string(), nullable=True),
pa.field("manifest_list", pa.string(), nullable=False),
pa.field("summary", pa.map_(pa.string(), pa.string()), nullable=True),
])
snapshots = []
for snapshot in self.tbl.metadata.snapshots:
if summary := snapshot.summary:
operation = summary.operation.value
additional_properties = snapshot.summary.additional_properties
else:
operation = None
additional_properties = None
snapshots.append({
"committed_at": datetime.utcfromtimestamp(snapshot.timestamp_ms / 1000.0),
"snapshot_id": snapshot.snapshot_id,
"parent_id": snapshot.parent_snapshot_id,
"operation": str(operation),
"manifest_list": snapshot.manifest_list,
"summary": additional_properties,
})
return pa.Table.from_pylist(
snapshots,
schema=snapshots_schema,
)
def entries(self, snapshot_id: Optional[int] = None) -> "pa.Table":
import pyarrow as pa
from pyiceberg.io.pyarrow import schema_to_pyarrow
schema = self.tbl.metadata.schema()
readable_metrics_struct = []
def _readable_metrics_struct(bound_type: PrimitiveType) -> pa.StructType:
pa_bound_type = schema_to_pyarrow(bound_type)
return pa.struct([
pa.field("column_size", pa.int64(), nullable=True),
pa.field("value_count", pa.int64(), nullable=True),
pa.field("null_value_count", pa.int64(), nullable=True),
pa.field("nan_value_count", pa.int64(), nullable=True),
pa.field("lower_bound", pa_bound_type, nullable=True),
pa.field("upper_bound", pa_bound_type, nullable=True),
])
for field in self.tbl.metadata.schema().fields:
readable_metrics_struct.append(
pa.field(schema.find_column_name(field.field_id), _readable_metrics_struct(field.field_type), nullable=False)
)
partition_record = self.tbl.metadata.specs_struct()
pa_record_struct = schema_to_pyarrow(partition_record)
entries_schema = pa.schema([
pa.field("status", pa.int8(), nullable=False),
pa.field("snapshot_id", pa.int64(), nullable=False),
pa.field("sequence_number", pa.int64(), nullable=False),
pa.field("file_sequence_number", pa.int64(), nullable=False),
pa.field(
"data_file",
pa.struct([
pa.field("content", pa.int8(), nullable=False),
pa.field("file_path", pa.string(), nullable=False),
pa.field("file_format", pa.string(), nullable=False),
pa.field("partition", pa_record_struct, nullable=False),
pa.field("record_count", pa.int64(), nullable=False),
pa.field("file_size_in_bytes", pa.int64(), nullable=False),
pa.field("column_sizes", pa.map_(pa.int32(), pa.int64()), nullable=True),
pa.field("value_counts", pa.map_(pa.int32(), pa.int64()), nullable=True),
pa.field("null_value_counts", pa.map_(pa.int32(), pa.int64()), nullable=True),
pa.field("nan_value_counts", pa.map_(pa.int32(), pa.int64()), nullable=True),
pa.field("lower_bounds", pa.map_(pa.int32(), pa.binary()), nullable=True),
pa.field("upper_bounds", pa.map_(pa.int32(), pa.binary()), nullable=True),
pa.field("key_metadata", pa.binary(), nullable=True),
pa.field("split_offsets", pa.list_(pa.int64()), nullable=True),
pa.field("equality_ids", pa.list_(pa.int32()), nullable=True),
pa.field("sort_order_id", pa.int32(), nullable=True),
]),
nullable=False,
),
pa.field("readable_metrics", pa.struct(readable_metrics_struct), nullable=True),
])
entries = []
snapshot = self._get_snapshot(snapshot_id)
for manifest in snapshot.manifests(self.tbl.io):
for entry in manifest.fetch_manifest_entry(io=self.tbl.io):
column_sizes = entry.data_file.column_sizes or {}
value_counts = entry.data_file.value_counts or {}
null_value_counts = entry.data_file.null_value_counts or {}
nan_value_counts = entry.data_file.nan_value_counts or {}
lower_bounds = entry.data_file.lower_bounds or {}
upper_bounds = entry.data_file.upper_bounds or {}
readable_metrics = {
schema.find_column_name(field.field_id): {
"column_size": column_sizes.get(field.field_id),
"value_count": value_counts.get(field.field_id),
"null_value_count": null_value_counts.get(field.field_id),
"nan_value_count": nan_value_counts.get(field.field_id),
# Makes them readable
"lower_bound": from_bytes(field.field_type, lower_bound)
if (lower_bound := lower_bounds.get(field.field_id))
else None,
"upper_bound": from_bytes(field.field_type, upper_bound)
if (upper_bound := upper_bounds.get(field.field_id))
else None,
}
for field in self.tbl.metadata.schema().fields
}
partition = entry.data_file.partition
partition_record_dict = {
field.name: partition[pos]
for pos, field in enumerate(self.tbl.metadata.specs()[manifest.partition_spec_id].fields)
}
entries.append({
"status": entry.status.value,
"snapshot_id": entry.snapshot_id,
"sequence_number": entry.data_sequence_number,
"file_sequence_number": entry.file_sequence_number,
"data_file": {
"content": entry.data_file.content,
"file_path": entry.data_file.file_path,
"file_format": entry.data_file.file_format,
"partition": partition_record_dict,
"record_count": entry.data_file.record_count,
"file_size_in_bytes": entry.data_file.file_size_in_bytes,
"column_sizes": dict(entry.data_file.column_sizes),
"value_counts": dict(entry.data_file.value_counts),
"null_value_counts": dict(entry.data_file.null_value_counts),
"nan_value_counts": entry.data_file.nan_value_counts,
"lower_bounds": entry.data_file.lower_bounds,
"upper_bounds": entry.data_file.upper_bounds,
"key_metadata": entry.data_file.key_metadata,
"split_offsets": entry.data_file.split_offsets,
"equality_ids": entry.data_file.equality_ids,
"sort_order_id": entry.data_file.sort_order_id,
"spec_id": entry.data_file.spec_id,
},
"readable_metrics": readable_metrics,
})
return pa.Table.from_pylist(
entries,
schema=entries_schema,
)
def refs(self) -> "pa.Table":
import pyarrow as pa
ref_schema = pa.schema([
pa.field("name", pa.string(), nullable=False),
pa.field("type", pa.dictionary(pa.int32(), pa.string()), nullable=False),
pa.field("snapshot_id", pa.int64(), nullable=False),
pa.field("max_reference_age_in_ms", pa.int64(), nullable=True),
pa.field("min_snapshots_to_keep", pa.int32(), nullable=True),
pa.field("max_snapshot_age_in_ms", pa.int64(), nullable=True),
])
ref_results = []
for ref in self.tbl.metadata.refs:
if snapshot_ref := self.tbl.metadata.refs.get(ref):
ref_results.append({
"name": ref,
"type": snapshot_ref.snapshot_ref_type.upper(),
"snapshot_id": snapshot_ref.snapshot_id,
"max_reference_age_in_ms": snapshot_ref.max_ref_age_ms,
"min_snapshots_to_keep": snapshot_ref.min_snapshots_to_keep,
"max_snapshot_age_in_ms": snapshot_ref.max_snapshot_age_ms,
})
return pa.Table.from_pylist(ref_results, schema=ref_schema)
def partitions(self, snapshot_id: Optional[int] = None) -> "pa.Table":
import pyarrow as pa
from pyiceberg.io.pyarrow import schema_to_pyarrow
table_schema = pa.schema([
pa.field("record_count", pa.int64(), nullable=False),
pa.field("file_count", pa.int32(), nullable=False),
pa.field("total_data_file_size_in_bytes", pa.int64(), nullable=False),
pa.field("position_delete_record_count", pa.int64(), nullable=False),
pa.field("position_delete_file_count", pa.int32(), nullable=False),
pa.field("equality_delete_record_count", pa.int64(), nullable=False),
pa.field("equality_delete_file_count", pa.int32(), nullable=False),
pa.field("last_updated_at", pa.timestamp(unit="ms"), nullable=True),
pa.field("last_updated_snapshot_id", pa.int64(), nullable=True),
])
partition_record = self.tbl.metadata.specs_struct()
has_partitions = len(partition_record.fields) > 0
if has_partitions:
pa_record_struct = schema_to_pyarrow(partition_record)
partitions_schema = pa.schema([
pa.field("partition", pa_record_struct, nullable=False),
pa.field("spec_id", pa.int32(), nullable=False),
])
table_schema = pa.unify_schemas([partitions_schema, table_schema])
def update_partitions_map(
partitions_map: Dict[Tuple[str, Any], Any],
file: DataFile,
partition_record_dict: Dict[str, Any],
snapshot: Optional[Snapshot],
) -> None:
partition_record_key = _convert_to_hashable_type(partition_record_dict)
if partition_record_key not in partitions_map:
partitions_map[partition_record_key] = {
"partition": partition_record_dict,
"spec_id": file.spec_id,
"record_count": 0,
"file_count": 0,
"total_data_file_size_in_bytes": 0,
"position_delete_record_count": 0,
"position_delete_file_count": 0,
"equality_delete_record_count": 0,
"equality_delete_file_count": 0,
"last_updated_at": snapshot.timestamp_ms if snapshot else None,
"last_updated_snapshot_id": snapshot.snapshot_id if snapshot else None,
}
partition_row = partitions_map[partition_record_key]
if snapshot is not None:
if partition_row["last_updated_at"] is None or partition_row["last_updated_snapshot_id"] < snapshot.timestamp_ms:
partition_row["last_updated_at"] = snapshot.timestamp_ms
partition_row["last_updated_snapshot_id"] = snapshot.snapshot_id
if file.content == DataFileContent.DATA:
partition_row["record_count"] += file.record_count
partition_row["file_count"] += 1
partition_row["total_data_file_size_in_bytes"] += file.file_size_in_bytes
elif file.content == DataFileContent.POSITION_DELETES:
partition_row["position_delete_record_count"] += file.record_count
partition_row["position_delete_file_count"] += 1
elif file.content == DataFileContent.EQUALITY_DELETES:
partition_row["equality_delete_record_count"] += file.record_count
partition_row["equality_delete_file_count"] += 1
else:
raise ValueError(f"Unknown DataFileContent ({file.content})")
partitions_map: Dict[Tuple[str, Any], Any] = {}
snapshot = self._get_snapshot(snapshot_id)
for manifest in snapshot.manifests(self.tbl.io):
for entry in manifest.fetch_manifest_entry(io=self.tbl.io):
partition = entry.data_file.partition
partition_record_dict = {
field.name: partition[pos]
for pos, field in enumerate(self.tbl.metadata.specs()[manifest.partition_spec_id].fields)
}
entry_snapshot = self.tbl.snapshot_by_id(entry.snapshot_id) if entry.snapshot_id is not None else None
update_partitions_map(partitions_map, entry.data_file, partition_record_dict, entry_snapshot)
return pa.Table.from_pylist(
partitions_map.values(),
schema=table_schema,
)
def manifests(self) -> "pa.Table":
import pyarrow as pa
from pyiceberg.conversions import from_bytes
partition_summary_schema = pa.struct([
pa.field("contains_null", pa.bool_(), nullable=False),
pa.field("contains_nan", pa.bool_(), nullable=True),
pa.field("lower_bound", pa.string(), nullable=True),
pa.field("upper_bound", pa.string(), nullable=True),
])
manifest_schema = pa.schema([
pa.field("content", pa.int8(), nullable=False),
pa.field("path", pa.string(), nullable=False),
pa.field("length", pa.int64(), nullable=False),
pa.field("partition_spec_id", pa.int32(), nullable=False),
pa.field("added_snapshot_id", pa.int64(), nullable=False),
pa.field("added_data_files_count", pa.int32(), nullable=False),
pa.field("existing_data_files_count", pa.int32(), nullable=False),
pa.field("deleted_data_files_count", pa.int32(), nullable=False),
pa.field("added_delete_files_count", pa.int32(), nullable=False),
pa.field("existing_delete_files_count", pa.int32(), nullable=False),
pa.field("deleted_delete_files_count", pa.int32(), nullable=False),
pa.field("partition_summaries", pa.list_(partition_summary_schema), nullable=False),
])
def _partition_summaries_to_rows(
spec: PartitionSpec, partition_summaries: List[PartitionFieldSummary]
) -> List[Dict[str, Any]]:
rows = []
for i, field_summary in enumerate(partition_summaries):
field = spec.fields[i]
partition_field_type = spec.partition_type(self.tbl.schema()).fields[i].field_type
lower_bound = (
(
field.transform.to_human_string(
partition_field_type, from_bytes(partition_field_type, field_summary.lower_bound)
)
)
if field_summary.lower_bound
else None
)
upper_bound = (
(
field.transform.to_human_string(
partition_field_type, from_bytes(partition_field_type, field_summary.upper_bound)
)
)
if field_summary.upper_bound
else None
)
rows.append({
"contains_null": field_summary.contains_null,
"contains_nan": field_summary.contains_nan,
"lower_bound": lower_bound,
"upper_bound": upper_bound,
})
return rows
specs = self.tbl.metadata.specs()
manifests = []
if snapshot := self.tbl.metadata.current_snapshot():
for manifest in snapshot.manifests(self.tbl.io):
is_data_file = manifest.content == ManifestContent.DATA
is_delete_file = manifest.content == ManifestContent.DELETES
manifests.append({
"content": manifest.content,
"path": manifest.manifest_path,
"length": manifest.manifest_length,
"partition_spec_id": manifest.partition_spec_id,
"added_snapshot_id": manifest.added_snapshot_id,
"added_data_files_count": manifest.added_files_count if is_data_file else 0,
"existing_data_files_count": manifest.existing_files_count if is_data_file else 0,
"deleted_data_files_count": manifest.deleted_files_count if is_data_file else 0,
"added_delete_files_count": manifest.added_files_count if is_delete_file else 0,
"existing_delete_files_count": manifest.existing_files_count if is_delete_file else 0,
"deleted_delete_files_count": manifest.deleted_files_count if is_delete_file else 0,
"partition_summaries": _partition_summaries_to_rows(specs[manifest.partition_spec_id], manifest.partitions)
if manifest.partitions
else [],
})
return pa.Table.from_pylist(
manifests,
schema=manifest_schema,
)
@dataclass(frozen=True)
class TablePartition:
partition_key: PartitionKey
arrow_table_partition: pa.Table
def _get_table_partitions(
arrow_table: pa.Table,
partition_spec: PartitionSpec,
schema: Schema,
slice_instructions: list[dict[str, Any]],
) -> list[TablePartition]:
sorted_slice_instructions = sorted(slice_instructions, key=lambda x: x["offset"])
partition_fields = partition_spec.fields
offsets = [inst["offset"] for inst in sorted_slice_instructions]
projected_and_filtered = {
partition_field.source_id: arrow_table[schema.find_field(name_or_id=partition_field.source_id).name]
.take(offsets)
.to_pylist()
for partition_field in partition_fields
}
table_partitions = []
for idx, inst in enumerate(sorted_slice_instructions):
partition_slice = arrow_table.slice(**inst)
fieldvalues = [
PartitionFieldValue(partition_field, projected_and_filtered[partition_field.source_id][idx])
for partition_field in partition_fields
]
partition_key = PartitionKey(raw_partition_field_values=fieldvalues, partition_spec=partition_spec, schema=schema)
table_partitions.append(TablePartition(partition_key=partition_key, arrow_table_partition=partition_slice))
return table_partitions
def _determine_partitions(spec: PartitionSpec, schema: Schema, arrow_table: pa.Table) -> List[TablePartition]:
"""Based on the iceberg table partition spec, slice the arrow table into partitions with their keys.
Example:
Input:
An arrow table with partition key of ['n_legs', 'year'] and with data of
{'year': [2020, 2022, 2022, 2021, 2022, 2022, 2022, 2019, 2021],
'n_legs': [2, 2, 2, 4, 4, 4, 4, 5, 100],
'animal': ["Flamingo", "Parrot", "Parrot", "Dog", "Horse", "Horse", "Horse","Brittle stars", "Centipede"]}.
The algrithm:
Firstly we group the rows into partitions by sorting with sort order [('n_legs', 'descending'), ('year', 'descending')]
and null_placement of "at_end".
This gives the same table as raw input.
Then we sort_indices using reverse order of [('n_legs', 'descending'), ('year', 'descending')]
and null_placement : "at_start".
This gives:
[8, 7, 4, 5, 6, 3, 1, 2, 0]
Based on this we get partition groups of indices:
[{'offset': 8, 'length': 1}, {'offset': 7, 'length': 1}, {'offset': 4, 'length': 3}, {'offset': 3, 'length': 1}, {'offset': 1, 'length': 2}, {'offset': 0, 'length': 1}]
We then retrieve the partition keys by offsets.
And slice the arrow table by offsets and lengths of each partition.
"""
import pyarrow as pa
partition_columns: List[Tuple[PartitionField, NestedField]] = [
(partition_field, schema.find_field(partition_field.source_id)) for partition_field in spec.fields
]
partition_values_table = pa.table({
str(partition.field_id): partition.transform.pyarrow_transform(field.field_type)(arrow_table[field.name])
for partition, field in partition_columns
})
# Sort by partitions
sort_indices = pa.compute.sort_indices(
partition_values_table,
sort_keys=[(col, "ascending") for col in partition_values_table.column_names],
null_placement="at_end",
).to_pylist()
arrow_table = arrow_table.take(sort_indices)
# Get slice_instructions to group by partitions
partition_values_table = partition_values_table.take(sort_indices)
reversed_indices = pa.compute.sort_indices(
partition_values_table,
sort_keys=[(col, "descending") for col in partition_values_table.column_names],
null_placement="at_start",
).to_pylist()
slice_instructions: List[Dict[str, Any]] = []
last = len(reversed_indices)
reversed_indices_size = len(reversed_indices)
ptr = 0
while ptr < reversed_indices_size:
group_size = last - reversed_indices[ptr]
offset = reversed_indices[ptr]
slice_instructions.append({"offset": offset, "length": group_size})
last = reversed_indices[ptr]
ptr = ptr + group_size
table_partitions: List[TablePartition] = _get_table_partitions(arrow_table, spec, schema, slice_instructions)
return table_partitions
|