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 **4,118,405 documents across 211 shards**. We plan to add more snapshots over time.
+The dataset currently includes crawl **CC-MAIN-2026-08** with **4,585,843 documents across 235 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 211 files of CC-MAIN-2026-08 (4,118,405 pages total), projected to the full crawl of 100,000 WARC files.
+Numbers below are actual measurements summed across all 235 files of CC-MAIN-2026-08 (4,585,843 pages total), projected to the full crawl of 100,000 WARC files.
 
-| Stage | 211 files (measured) | 100,000 files (projected) | Reduction |
+| Stage | 235 files (measured) | 100,000 files (projected) | Reduction |
 |---|---|---|---|
-| Raw WARC (.warc.gz, downloaded) | ~171.0 GB | ~83 TB | — |
-| HTML extracted (uncompressed) | 509.6 GB | ~295 TB | — |
-| Packed markdown WARC (.md.warc.gz) | ~8.6 GB | ~3.7 TB | **-98.3%** vs HTML |
-| Final Parquet (Zstd level 19) | 5.9 GB | ~2.9 TB | **-32.1%** vs packed WARC |
+| Raw WARC (.warc.gz, downloaded) | ~190.5 GB | ~83 TB | — |
+| HTML extracted (uncompressed) | 567.1 GB | ~295 TB | — |
+| Packed markdown WARC (.md.warc.gz) | ~9.6 GB | ~3.7 TB | **-98.3%** vs HTML |
+| Final Parquet (Zstd level 19) | 6.5 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 509.6 GB of uncompressed HTML down to 18.4 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 567.1 GB of uncompressed HTML down to 20.5 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: ~171.0 GB of raw gzipped WARCs becomes **5.9 GB of Parquet** — a **96.6% total reduction** — containing 4,118,405 clean markdown documents.
+End to end: ~190.5 GB of raw gzipped WARCs becomes **6.5 GB of Parquet** — a **96.6% total reduction** — containing 4,585,843 clean markdown documents.
 
 ### Processing Times
 
-Pipeline timings across 211 shards of CC-MAIN-2026-08:
+Pipeline timings across 235 shards of CC-MAIN-2026-08:
 
 ```
-Download (raw WARC)        ████████████████████████  total 6h 52m 31s    avg 1m 57s
+Download (raw WARC)        ████████████████████████  total 8h 4m 45s     avg 2m 3s
 Convert  (HTML → MD)       █░░░░░░░░░░░░░░░░░░░░░░░  total 16m 2s        avg 4s
-Export   (Parquet)          ████░░░░░░░░░░░░░░░░░░░░  total 1h 24m 57s    avg 24s
-Publish  (HuggingFace)      ███████████░░░░░░░░░░░░░  total 3h 11m 55s    avg 54s
+Export   (Parquet)          ████░░░░░░░░░░░░░░░░░░░░  total 1h 36m 13s    avg 24s
+Publish  (HuggingFace)      █████████░░░░░░░░░░░░░░░  total 3h 13m 30s    avg 49s
 ```
 
 ### 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

@@ -47,6 +47,11 @@ CC-MAIN-2026-08,44,19268,2543453471,92880103,29438620,2026-03-13T07:09:04Z,132,0
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 CC-MAIN-2026-08,47,19360,2607142769,94572800,30141571,2026-03-13T07:24:07Z,375,0,31,25
+CC-MAIN-2026-08,48,19446,2550413995,94532267,30523721,2026-03-13T09:46:09Z,230,0,24,0
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@@ -85,6 +90,10 @@ CC-MAIN-2026-08,135,19366,2564048477,96359527,30751456,2026-03-13T08:38:48Z,110,
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 CC-MAIN-2026-08,138,19484,2561985017,91643960,29903683,2026-03-13T08:48:08Z,98,0,19,129
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@@ -124,7 +133,8 @@ CC-MAIN-2026-08,286,19521,2604143328,95453072,31055879,2026-03-13T08:39:07Z,116,
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+CC-MAIN-2026-08,290,19333,2552308644,90326736,28308814,2026-03-13T08:51:49Z,71,0,18,95
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@@ -149,12 +159,22 @@ CC-MAIN-2026-08,421,19425,2579210908,95275597,30546957,2026-03-13T08:32:40Z,126,
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@@ -175,6 +195,10 @@ CC-MAIN-2026-08,717,19177,2533421579,90968900,29639500,2026-03-13T07:48:49Z,206,
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