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https://issues.apache.org/jira/browse/HIVE-585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724787#action_12724787
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Ashish Thusoo commented on HIVE-585:
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Write to stderr and use that as a proxy to send progress messages to the
jobtracker.
> mapjoin may lead to timeouts
> ----------------------------
>
> Key: HIVE-585
> URL: https://issues.apache.org/jira/browse/HIVE-585
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Namit Jain
>
> MapJoin reads the entire mapper-side tables before emitting any output.
> This causes timeouts -
> I can employ similar approach to Script - any other suggestions !!!
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