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Posted to issues@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2017/09/26 22:13:00 UTC

[jira] [Commented] (HIVE-17611) Add new LazyBinary SerDe for faster writes

    [ https://issues.apache.org/jira/browse/HIVE-17611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181669#comment-16181669 ] 

Prasanth Jayachandran commented on HIVE-17611:
----------------------------------------------

lgtm, +1. Pending tests.

> Add new LazyBinary SerDe for faster writes
> ------------------------------------------
>
>                 Key: HIVE-17611
>                 URL: https://issues.apache.org/jira/browse/HIVE-17611
>             Project: Hive
>          Issue Type: Improvement
>          Components: Serializers/Deserializers
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>         Attachments: HIVE-17611.1.patch
>
>
> LazyBinarySerDe.serialize() ends up making getCategory()/getPrimitiveCategory() calls for every column of every row. Tried some simple tests to eliminate these calls for the non-vectorized version, this looks like it speeds up the writes by ~3x.
> Adding a LazyBinarySerDe2 class with this new implementation.



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