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Posted to commits@hudi.apache.org by "Ethan Guo (Jira)" <ji...@apache.org> on 2023/08/29 02:25:00 UTC

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

     [ https://issues.apache.org/jira/browse/HUDI-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ethan Guo updated HUDI-4321:
----------------------------
    Priority: Major  (was: Critical)

> 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
>            Priority: Major
>             Fix For: 0.14.0
>
>
> 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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