subreddits-directory / conversion-manifest.json
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Use native timestamps, booleans, integers, and nulls for subreddit metadata
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{
"source": "https://www.kaggle.com/datasets/hashiromer/subreddits-directory",
"source_filename": "subreddits_with_details.csv",
"source_bytes": 397566769,
"source_sha256": "a449ece09a2115e8eba670a0d00cc0cca734b4b3d85d289dcd5f6f2becd833b1",
"source_license_identifier": "reddit-api",
"parquet_file": "data/data.parquet",
"parquet_bytes": 184146598,
"parquet_sha256": "c8a520b2d2785cf79c9baa23ba98f904e5bee2e146acb6ff9b20aa345ddddb68",
"row_count": 395018,
"column_count": 12,
"columns": [
"title",
"description",
"display_name",
"created_utc",
"over18",
"url",
"subscribers",
"public_description",
"subreddit",
"retrieved_on",
"rules_markdown",
"descp"
],
"column_types": {
"title": "string",
"description": "string",
"display_name": "string",
"created_utc": "timestamp[us, tz=UTC]",
"over18": "bool",
"url": "string",
"subscribers": "int64",
"public_description": "string",
"subreddit": "string",
"retrieved_on": "timestamp[us, tz=UTC]",
"rules_markdown": "string",
"descp": "string"
},
"source_empty_string_counts": {
"title": 18,
"description": 161178,
"display_name": 1,
"created_utc": 0,
"over18": 0,
"url": 0,
"subscribers": 0,
"public_description": 54126,
"subreddit": 0,
"retrieved_on": 259611,
"rules_markdown": 259611,
"descp": 0
},
"null_counts": {
"title": 18,
"description": 161178,
"display_name": 1,
"created_utc": 0,
"over18": 0,
"url": 0,
"subscribers": 0,
"public_description": 54126,
"subreddit": 0,
"retrieved_on": 259611,
"rules_markdown": 259611,
"descp": 0
},
"validation": {
"method": "Full cell-by-cell comparison: exact nonempty text, inverse semantic comparisons for typed values, empty cells mapped to null",
"verified_rows": 395018,
"all_semantic_values_match": true,
"nonempty_text_unchanged": true,
"null_counts_match_source_empty_cells": true,
"row_order_preserved": true,
"column_order_preserved": true
},
"conversion": {
"pyarrow_version": "26.0.0",
"compression": "zstd",
"csv_encoding": "utf-8",
"type_inference": false,
"empty_fields": "Only exact empty strings become null; literal null-like text is preserved",
"created_utc": "ISO 8601 UTC to timestamp[us, tz=UTC]",
"retrieved_on": "Unix seconds to timestamp[us, tz=UTC] using exact decimal arithmetic",
"over18": "True/False text to boolean",
"subscribers": "Nonnegative integer text to int64",
"write_page_index": true,
"metadata_refreshed": false
}
}