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Posted to dev@hive.apache.org by "Gunther Hagleitner (JIRA)" <ji...@apache.org> on 2013/05/14 01:21:16 UTC

[jira] [Commented] (HIVE-4475) Switch RCFile default to LazyBinaryColumnarSerDe

    [ https://issues.apache.org/jira/browse/HIVE-4475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13656512#comment-13656512 ] 

Gunther Hagleitner commented on HIVE-4475:
------------------------------------------

review: https://reviews.facebook.net/D10785
                
> Switch RCFile default to LazyBinaryColumnarSerDe
> ------------------------------------------------
>
>                 Key: HIVE-4475
>                 URL: https://issues.apache.org/jira/browse/HIVE-4475
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Gunther Hagleitner
>            Assignee: Gunther Hagleitner
>         Attachments: HIVE-4475.1.patch
>
>
> For most workloads it seems LazyBinaryColumnarSerDe (binary) will perform better than ColumnarSerDe (text). Not sure why ColumnarSerDe is the default, but my guess is, that's for historical reasons. I suggest switching the default.

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