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Posted to commits@hudi.apache.org by "Alexey Kudinkin (Jira)" <ji...@apache.org> on 2022/06/25 04:09:00 UTC

[jira] [Created] (HUDI-4321) Fix Hudi to not write in Parquet legacy format

Alexey Kudinkin created HUDI-4321:
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             Summary: Fix Hudi to not write in Parquet legacy format
                 Key: HUDI-4321
                 URL: https://issues.apache.org/jira/browse/HUDI-4321
             Project: Apache Hudi
          Issue Type: Bug
            Reporter: Alexey Kudinkin


Currently Hudi have to write in Parquet legacy-format ("spark.sql.parquet.writeLegacyFormat") whenever schema contains Decimals, due to the fact that it relies on AvroParquetReader which is unable to read Decimals in the non-legacy format (ie it could only read Decimals encoded as FIXED_BYTE_ARRAY, and not as INT32/INT64)

This leads to suboptimal storage footprint where for example on some datasets this could lead to a bloat of 10% or more.



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