Publish data/CC-MAIN-2026-08/00000.parquet

README.md

@@ -32,7 +32,7 @@ configs:
 
 Open Index is a large-scale web text dataset built from [Common Crawl](https://commoncrawl.org). Every page goes through a pipeline that extracts the main content from raw HTML, converts it to clean Markdown using [trafilatura](https://github.com/adbar/trafilatura), and packages the result into Parquet files with full WARC metadata preserved.
 
-The dataset currently includes crawl **CC-MAIN-2026-08** with **4,955,095 documents across 254 shards**. We plan to add more snapshots over time.
+The dataset currently includes crawl **CC-MAIN-2026-08** with **5,032,347 documents across 258 shards**. We plan to add more snapshots over time.
 
 Open Index is released under the **Open Data Commons Attribution License (ODC-By) v1.0**, the same license used by Common Crawl.
 
@@ -118,7 +118,6 @@ The following is an example row from the dataset:
   "warc_refers_to": "<urn:uuid:f9e8d7c6-b5a4-3210-fedc-ba0987654321>",
   "html_length": 48210,
   "markdown_length": 3847,
-  "warc_headers_json": "{\"Content-Length\": \"3847\", ...}",
   "markdown": "# Interesting Topic\n\nThis is the main content of the page..."
 }
 ```
@@ -131,11 +130,10 @@ The following is an example row from the dataset:
 | `url` | string | Original URL of the crawled page |
 | `host` | string | Lowercase hostname extracted from the URL |
 | `crawl_date` | string | RFC 3339 timestamp from the WARC record |
-| `warc_record_id` | string | Full WARC-Record-ID of the conversion record (`<urn:uuid:...>`) |
+| `warc_record_id` | string | Full WARC-Record-ID of this conversion record (`<urn:uuid:...>`) |
 | `warc_refers_to` | string | WARC-Record-ID of the original HTTP response this was converted from |
 | `html_length` | int64 | Byte length of the original HTML body before conversion |
 | `markdown_length` | int64 | Byte length of the converted markdown body |
-| `warc_headers_json` | string | All WARC headers as a sorted-key JSON object — full provenance in one column |
 | `markdown` | string | Clean markdown content extracted from the page |
 
 ### Data Splits
@@ -166,35 +164,37 @@ Empty conversions (pages where trafilatura could not extract meaningful content)
 
 ### Compression Ratios
 
-Numbers below are actual measurements summed across all 254 files of CC-MAIN-2026-08 (4,955,095 pages total), projected to the full crawl of 100,000 WARC files.
+Numbers below are actual measurements summed across all 258 files of CC-MAIN-2026-08 (5,032,347 pages total), projected to the full crawl of 100,000 WARC files.
 
-| Stage | 254 files (measured) | 100,000 files (projected) | Reduction |
+| Stage | 258 files (measured) | 100,000 files (projected) | Reduction |
 |---|---|---|---|
-| Raw WARC (.warc.gz, downloaded) | ~205.9 GB | ~83 TB | — |
-| HTML extracted (uncompressed) | 612.6 GB | ~295 TB | — |
-| Packed markdown WARC (.md.warc.gz) | ~10.4 GB | ~3.7 TB | **-98.3%** vs HTML |
-| Final Parquet (Zstd level 19) | 7.1 GB | ~2.9 TB | **-32.1%** vs packed WARC |
+| Raw WARC (.warc.gz, downloaded) | ~209.1 GB | ~83 TB | — |
+| HTML extracted (uncompressed) | 622.1 GB | ~295 TB | — |
+| Packed markdown WARC (.md.warc.gz) | ~10.6 GB | ~3.7 TB | **-98.3%** vs HTML |
+| Final Parquet (Zstd level 19) | 7.2 GB | ~2.9 TB | **-32.1%** vs packed WARC |
 
-The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 612.6 GB of uncompressed HTML down to 22.2 GB of markdown — a **98.3% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 68.1%.
+The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 622.1 GB of uncompressed HTML down to 22.5 GB of markdown — a **98.3% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 68.1%.
 
-End to end: ~205.9 GB of raw gzipped WARCs becomes **7.1 GB of Parquet** — a **96.6% total reduction** — containing 4,955,095 clean markdown documents.
+End to end: ~209.1 GB of raw gzipped WARCs becomes **7.2 GB of Parquet** — a **96.6% total reduction** — containing 5,032,347 clean markdown documents.
 
 ### Processing Times
 
-Pipeline timings across 254 shards of CC-MAIN-2026-08:
+Pipeline timings across 258 shards of CC-MAIN-2026-08:
 
 ```
-Download (raw WARC)        ████████████████████████  total 8h 50m 12s    avg 2m 5s
+Download (raw WARC)        ████████████████████████  total 9h 2m 33s     avg 2m 6s
 Convert  (HTML → MD)       █░░░░░░░░░░░░░░░░░░░░░░░  total 16m 2s        avg 3s
-Export   (Parquet)          ████░░░░░░░░░░░░░░░░░░░░  total 1h 45m 50s    avg 25s
-Publish  (HuggingFace)      ████████████░░░░░░░░░░░░  total 4h 34m 2s     avg 1m 4s
+Export   (Parquet)          ████░░░░░░░░░░░░░░░░░░░░  total 1h 47m 53s    avg 25s
+Publish  (HuggingFace)      ████████████░░░░░░░░░░░░  total 4h 35m 31s    avg 1m 4s
 ```
 
 ### Dataset Charts
 
+![Total size: HTML vs Markdown vs Parquet](charts/totals_chart.png)
+
 ![Compression breakdown](charts/compression_pie.png)
 
-![Size per shard: HTML vs Parquet](charts/size_chart.png)
+![Size per shard: HTML vs Markdown](charts/size_chart.png)
 
 ![Pipeline time per shard](charts/timing_chart.png)
 

stats.csv

@@ -56,6 +56,7 @@ CC-MAIN-2026-08,53,19357,2578191580,96554618,29812656,2026-03-13T10:02:24Z,168,0
 CC-MAIN-2026-08,54,19483,2558749188,95680427,29738982,2026-03-13T10:04:53Z,123,0,25,0
 CC-MAIN-2026-08,55,19811,2639871700,95584061,30186548,2026-03-13T10:08:46Z,203,0,28,0
 CC-MAIN-2026-08,56,19564,2584558902,96118951,30612792,2026-03-13T10:11:02Z,110,0,24,0
+CC-MAIN-2026-08,57,19287,2537367660,89669513,29101832,2026-03-13T10:13:52Z,149,0,21,0
 CC-MAIN-2026-08,101,19267,2514449658,96925434,30875010,2026-03-13T06:40:05Z,179,0,50,81
 CC-MAIN-2026-08,102,19438,2568537422,97402434,31137610,2026-03-13T06:42:52Z,93,0,20,52
 CC-MAIN-2026-08,103,19511,2593312947,96164480,30296223,2026-03-13T06:47:48Z,187,0,46,61
@@ -177,6 +178,7 @@ CC-MAIN-2026-08,430,19562,2589628098,94171334,29515204,2026-03-13T10:01:57Z,160,
 CC-MAIN-2026-08,431,19413,2548907034,94526535,29610662,2026-03-13T10:04:44Z,141,0,24,0
 CC-MAIN-2026-08,432,19238,2571728032,91270409,28904924,2026-03-13T10:07:44Z,130,0,48,0
 CC-MAIN-2026-08,433,19491,2559045927,95637979,30992131,2026-03-13T10:09:55Z,108,0,22,0
+CC-MAIN-2026-08,434,19293,2556585254,94418254,30499336,2026-03-13T10:13:31Z,183,0,31,0
 CC-MAIN-2026-08,551,19551,2609034951,89980913,29167227,2026-03-13T06:42:51Z,280,0,20,176
 CC-MAIN-2026-08,552,19402,2594817630,94092761,30309254,2026-03-13T06:48:30Z,211,0,46,80
 CC-MAIN-2026-08,553,19856,2617133708,99106486,30365588,2026-03-13T06:52:51Z,116,0,23,120
@@ -217,6 +219,7 @@ CC-MAIN-2026-08,725,19412,2562975956,92451410,29425587,2026-03-13T10:00:42Z,119,
 CC-MAIN-2026-08,726,19460,2562536227,96869305,30705353,2026-03-13T10:04:08Z,168,0,36,0
 CC-MAIN-2026-08,727,19515,2591155330,96253967,30239842,2026-03-13T10:06:23Z,100,0,34,0
 CC-MAIN-2026-08,728,19540,2593341974,93848018,30167216,2026-03-13T10:09:28Z,154,0,29,0
+CC-MAIN-2026-08,729,19486,2582307405,94911288,30121176,2026-03-13T10:13:30Z,209,0,31,0
 CC-MAIN-2026-08,851,19575,2612873485,97000364,30911294,2026-03-13T06:41:39Z,163,0,37,204
 CC-MAIN-2026-08,852,19334,2546015208,94959847,30205044,2026-03-13T06:45:52Z,183,0,57,11
 CC-MAIN-2026-08,853,19694,2567973975,95901932,30303494,2026-03-13T06:50:12Z,150,0,28,80
@@ -253,4 +256,4 @@ CC-MAIN-2026-08,883,19257,2558252415,92279950,30785208,2026-03-13T08:41:09Z,114,
 CC-MAIN-2026-08,884,19543,2583118668,92146843,29251284,2026-03-13T08:43:26Z,108,0,19,8
 CC-MAIN-2026-08,885,19529,2585227509,96533946,30604115,2026-03-13T10:05:08Z,111,0,22,4766
 CC-MAIN-2026-08,886,19392,2590108194,93901267,29711500,2026-03-13T10:09:00Z,142,0,22,66
-CC-MAIN-2026-08,887,19413,2546371491,94095379,29912843,2026-03-13T10:11:44Z,139,0,23,0
+CC-MAIN-2026-08,887,19413,2546371491,94095379,29912843,2026-03-13T10:13:13Z,139,0,23,89