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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-395) Arrow file format writes record batches in reverse order.

     [ https://issues.apache.org/jira/browse/ARROW-395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-395:
---------------------------------
    Component/s: Java

> Arrow file format writes record batches in reverse order.
> ---------------------------------------------------------
>
>                 Key: ARROW-395
>                 URL: https://issues.apache.org/jira/browse/ARROW-395
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Java
>            Reporter: Julien Le Dem
>            Assignee: Julien Le Dem
>            Priority: Major
>             Fix For: 0.2.0
>
>
> This is because flatbuffers require writing in reverse order and we don't for record batches.
> The following method:
> org.apache.arrow.vector.file.ArrowFooter.endVector(FlatBufferBuilder, List<ArrowBlock>)
> Should use this one:
> org.apache.arrow.vector.schema.FBSerializables.writeAllStructsToVector(FlatBufferBuilder, List<? extends FBSerializable>)



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