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https://issues.apache.org/jira/browse/PARQUET-2196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17619391#comment-17619391
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ASF GitHub Bot commented on PARQUET-2196:
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pitrou commented on PR #1000:
URL: https://github.com/apache/parquet-mr/pull/1000#issuecomment-1282107004
It would probably be easier to use a git submodule (I wonder why that's not
the approach being used in `parquet-mr`), but in any case reference files
should go into the `parquet-testing` repo, not be privately-maintained in
`parquet-mr`.
> Support LZ4_RAW codec
> ---------------------
>
> Key: PARQUET-2196
> URL: https://issues.apache.org/jira/browse/PARQUET-2196
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
> Reporter: Gang Wu
> Priority: Major
>
> There is a long history about the LZ4 interoperability of parquet files
> between parquet-mr and parquet-cpp (which is now in the Apache Arrow).
> Attached links are the evidence. In short, a new LZ4_RAW codec type has been
> introduced since parquet format v2.9.0. However, only parquet-cpp supports
> LZ4_RAW. The parquet-mr library still uses the old Hadoop-provided LZ4 codec
> and cannot read parquet files with LZ4_RAW.
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