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https://issues.apache.org/jira/browse/HADOOP-4230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joydeep Sen Sarma updated HADOOP-4230:
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Status: Open (was: Patch Available)
> Hive: GroupBy should not pass the whole row from mapper to reducer
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>
> Key: HADOOP-4230
> URL: https://issues.apache.org/jira/browse/HADOOP-4230
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/hive
> Reporter: Zheng Shao
> Assignee: Namit Jain
>
> We only need to pass fields that are needed.
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