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https://issues.apache.org/jira/browse/PARQUET-574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15224848#comment-15224848
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Ryan Blue commented on PARQUET-574:
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Wes, Parquet Java will only write booleans using RLE for 2.0, so to be safe I
think we should consider it 2.0. But, I don't think readers would have a
problem with it because RLE is part of the 1.0 spec and most of the time the
encoding should be interchangeable.
> Boolean format in Plain Decoder
> --------------------------------
>
> Key: PARQUET-574
> URL: https://issues.apache.org/jira/browse/PARQUET-574
> Project: Parquet
> Issue Type: Improvement
> Reporter: Fabrizio Milo
> Priority: Trivial
>
> In the encoding.md document is written that the plain encoder for boolean
> uses
> [RLE/BitPacking](https://github.com/apache/parquet-format/blob/master/Encodings.md#plain-plain--0)
>
> While in the cpp implementation seems is just using [simple bit decoding back
> to
> back.](https://github.com/apache/parquet-cpp/blob/master/src/parquet/encodings/plain-encoding.h#L151)
> Which one is the right format ?
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