Data Analysis
Parquet Bloom Filter ZoneMap Dictionary and Column Statistics Pruner Evaluator
Decode a Parquet thrift footer and quantify predicate-pushdown pruning: zone-map min/max, split-block bloom filters (XXH64), dictionary ratios and encodings, with per-row-group prune-savings estimates for example WHERE clauses.
html· HTML resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/parquet-bloom-filter-zonemap-dictionary-and-column-statistics-pruner-evaluator' \
-H 'Content-Type: application/json' \
-d '{"filename":"parquetFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/parquet-bloom-filter-zonemap-dictionary-and-column-statistics-pruner-evaluator' \
-F 'parquetFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'predicates=id = 75
id > 60
name = 'zeta''