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Posted to dev@parquet.apache.org by "Z M (Jira)" <ji...@apache.org> on 2022/02/14 16:20:00 UTC

[jira] [Created] (PARQUET-2122) Adding Bloom filter to small Parquet file bloats in size X1700

Z M created PARQUET-2122:
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             Summary: Adding Bloom filter to small Parquet file bloats in size X1700
                 Key: PARQUET-2122
                 URL: https://issues.apache.org/jira/browse/PARQUET-2122
             Project: Parquet
          Issue Type: Bug
          Components: parquet-cli, parquet-mr
    Affects Versions: 1.13.0
            Reporter: Z M
         Attachments: data.csv, data_index_bloom.parquet

Converting a small, 14 rows/1 string column csv file to Parquet without bloom filter yields a 600B file, adding '.withBloomFilterEnabled(true)' to ParquetWriter then yields a 1049197B file.

It isn't clear what the extra space is used by.

Attached csv and bloated Parquet files.



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