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Posted to dev@hive.apache.org by "He Yongqiang (JIRA)" <ji...@apache.org> on 2009/11/23 07:00:40 UTC

[jira] Commented: (HIVE-945) custom mappers/reducers should not be initialized at compile time

    [ https://issues.apache.org/jira/browse/HIVE-945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12781315#action_12781315 ] 

He Yongqiang commented on HIVE-945:
-----------------------------------

+1 looks good. Will commit once tests pass.  

> custom mappers/reducers should not be initialized at compile time
> -----------------------------------------------------------------
>
>                 Key: HIVE-945
>                 URL: https://issues.apache.org/jira/browse/HIVE-945
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.5.0
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.945.1.patch
>
>
> custom mappers/reducers should not be initialized at compile time
> Instead of being initialized at compile time, they should be initialized at the first row, since the custom job may be doing some redundant work or 
> some task specific work

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