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https://issues.apache.org/jira/browse/IMPALA-12108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell reassigned IMPALA-12108:
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Assignee: Joe McDonnell
> Add support for writing data with LZ4's high compression mode
> -------------------------------------------------------------
>
> Key: IMPALA-12108
> URL: https://issues.apache.org/jira/browse/IMPALA-12108
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 4.3.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
> Labels: ramp-up
>
> LZ4 has a high compression mode that gets higher compression ratios than
> Snappy while maintaining high decompression speeds. The tradeoff is that
> compression is very slow. We should add support for writing data with LZ4
> high compression mode. This would let us get a sense of the performance for
> writing and reading.
> See this benchmark on the LZ4 page:
> https://github.com/lz4/lz4#benchmarks
> In my hand tests, Parquet/LZ4 is about 13% smaller than Parquet/Snappy, but
> it retains the fast decompression.
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