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https://issues.apache.org/jira/browse/HIVE-945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12781320#action_12781320
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He Yongqiang commented on HIVE-945:
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nullscript.q fails, can u help take a look?
> 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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