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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2009/11/27 07:43:39 UTC

[jira] Commented: (HIVE-955) Passing columns needed onto ColumnarStruct

    [ https://issues.apache.org/jira/browse/HIVE-955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783043#action_12783043 ] 

Namit Jain commented on HIVE-955:
---------------------------------

Can you add more comments - I am not sure I understand this change

> Passing columns needed onto ColumnarStruct
> ------------------------------------------
>
>                 Key: HIVE-955
>                 URL: https://issues.apache.org/jira/browse/HIVE-955
>             Project: Hadoop Hive
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>         Attachments: ColumnarStruct_columnids_2009-11-25.2.patch
>
>
> This can avoid unneeded loop cycle in ColumnarStruct's init method. This can saves a lot when the table's column number is big.

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