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https://issues.apache.org/jira/browse/PARQUET-1171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16281223#comment-16281223
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Tim Armstrong commented on PARQUET-1171:
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BIT_PACKED is deprecated so I don't think it makes sense to extend the current
encoding. It's weird in that it packs the bits in the different order to the
supported RLE encoding. We could add a new BIT_PACKED encoding with the bits in
the safe order as RLE, but I think in practice either the RLE hybrid or some
form of delta encoding will give you the same benefits as pure bit-packed in
practice.
> [C++] Support RLE and BITPACKED as encodings for data
> -----------------------------------------------------
>
> Key: PARQUET-1171
> URL: https://issues.apache.org/jira/browse/PARQUET-1171
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-cpp
> Reporter: Uwe L. Korn
>
> Currently we only support these encodings for levels but not for data.
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