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https://issues.apache.org/jira/browse/HIVE-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743984#action_12743984
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Zheng Shao commented on HIVE-756:
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Another nitpick: We have both "selected_cols" and "prjColIDs" in the code.
Shall we use either "projected/prj" or "selected" for both? Otherwise it's easy
to get confused.
> 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
>
>
> There are some easy performance improvements in the columnar storage in Hive
> I found during Hackathon.
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