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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-756) performance improvement for RCFile and ColumnarSerDe in Hive
Date Wed, 19 Aug 2009 00:33:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12744801#action_12744801
] 

He Yongqiang commented on HIVE-756:
-----------------------------------

15% - 20% overall query performance is great. Keep it and do not need to revert it.

> performance improvement for RCFile and ColumnarSerDe in Hive
> ------------------------------------------------------------
>
>                 Key: HIVE-756
>                 URL: https://issues.apache.org/jira/browse/HIVE-756
>             Project: Hadoop Hive
>          Issue Type: Improvement
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: hive-756.patch, hive-756_2.patch
>
>
> There are some easy performance improvements in the columnar storage in Hive I found
during Hackathon. 

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