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Posted to issues@impala.apache.org by "Abhishek Rawat (JIRA)" <ji...@apache.org> on 2019/06/03 22:09:01 UTC

[jira] [Created] (IMPALA-8617) Add support for lz4 in parquet

Abhishek Rawat created IMPALA-8617:
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             Summary: Add support for lz4 in parquet
                 Key: IMPALA-8617
                 URL: https://issues.apache.org/jira/browse/IMPALA-8617
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Abhishek Rawat
            Assignee: Abhishek Rawat


Hadoop uses a native block format for LZ4 (same as parquet-mr api) which is incompatible with LZ4 block format.

As a result Parquet/LZ4 could have different block formats.

The parquet-cpp api (now Apache Arrow) uses parquet frame format, which is also incompatible with Parquet block format.

The current decision is to use a format compatible with Hive, Spark and parquet-mr.

 



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