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https://issues.apache.org/jira/browse/TAJO-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15023685#comment-15023685
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ASF GitHub Bot commented on TAJO-1983:
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Github user jinossy commented on the pull request:
https://github.com/apache/tajo/pull/869#issuecomment-159139295
This PR is ready to review.
Thanks
> Improve memory usage of ExternalSortExec
> ----------------------------------------
>
> Key: TAJO-1983
> URL: https://issues.apache.org/jira/browse/TAJO-1983
> Project: Tajo
> Issue Type: Improvement
> Components: Offheap, Physical Operator
> Affects Versions: 0.9.0, 0.10.0, 0.11.0
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Fix For: 0.12.0, 0.11.1
>
>
> ExternalSortExec keeps tuple list for sort. but it causes too many GC.
> We should change to off-heap tuple instead of VTuple
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