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https://issues.apache.org/jira/browse/HIVE-16546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985878#comment-15985878
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Prasanth Jayachandran commented on HIVE-16546:
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Currently testing the patch. Uploading it for review and precommit test run to
see if it affects any tests.
> LLAP: Fail map join tasks if hash table memory exceeds threshold
> ----------------------------------------------------------------
>
> Key: HIVE-16546
> URL: https://issues.apache.org/jira/browse/HIVE-16546
> Project: Hive
> Issue Type: Bug
> Components: llap
> Affects Versions: 3.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-16546.WIP.patch
>
>
> When map join task is running in llap, it can potentially use lot more memory
> than its limit which could be memory per executor or no conditional task
> size. If it uses more memory, it can adversely affect other query performance
> or it can even bring down the daemon. In such cases, it is better to fail the
> query than to bring down the daemon.
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