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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/01/18 12:58:00 UTC

[jira] [Updated] (ARROW-11301) [C++] Fix reading LZ4-compressed Parquet files produced by Java Parquet implementation

     [ https://issues.apache.org/jira/browse/ARROW-11301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-11301:
-----------------------------------
    Description: 
We slightly misunderstood the Hadoop LZ4 format. A compressed buffer can actually contain several "frames", each prefixed with (de)compressed size.

See https://issues.apache.org/jira/browse/ARROW-9177?focusedCommentId=17267058&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17267058

  was:See https://issues.apache.org/jira/browse/ARROW-9177?focusedCommentId=17267058&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17267058


> [C++] Fix reading LZ4-compressed Parquet files produced by Java Parquet implementation
> --------------------------------------------------------------------------------------
>
>                 Key: ARROW-11301
>                 URL: https://issues.apache.org/jira/browse/ARROW-11301
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Antoine Pitrou
>            Assignee: Antoine Pitrou
>            Priority: Blocker
>             Fix For: 3.0.0
>
>
> We slightly misunderstood the Hadoop LZ4 format. A compressed buffer can actually contain several "frames", each prefixed with (de)compressed size.
> See https://issues.apache.org/jira/browse/ARROW-9177?focusedCommentId=17267058&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17267058



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