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Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2019/06/03 13:18:00 UTC

[jira] [Updated] (ARROW-384) Align Java and C++ RecordBatch data and metadata layout

     [ https://issues.apache.org/jira/browse/ARROW-384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-384:
---------------------------------
    Component/s: Java
                 C++

> Align Java and C++ RecordBatch data and metadata layout
> -------------------------------------------------------
>
>                 Key: ARROW-384
>                 URL: https://issues.apache.org/jira/browse/ARROW-384
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++, Java
>            Reporter: Julien Le Dem
>            Assignee: Wes McKinney
>            Priority: Major
>             Fix For: 0.2.0
>
>
> layout on C++ side:
> {noformat}
> <buffers> <metadata> <metadata size: int32>
> {noformat}
> and on the java side:
> {noformat}
> <metadata> <buffers>
> {noformat}
> In the file format the footer has a Block info that contains the metadata length.
> https://github.com/apache/arrow/blob/f082b17323354dc2af31f39c15c58b995ba08360/format/File.fbs#L36
> See:
> https://github.com/apache/arrow/pull/211#issuecomment-262080545



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