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https://issues.apache.org/jira/browse/TAJO-1407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377076#comment-14377076
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ASF GitHub Bot commented on TAJO-1407:
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Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/426#issuecomment-85286436
Oh, I think it's ok. The revised test doesn't contain any comparisons of
elapsed times.
In addition, MemSortExec is executed only when there remains a sufficient
amount of memory.
Here is my +1, and I'll commit it shortly.
Thanks for your great work!
> Minor performance improvement of MemSortExec
> --------------------------------------------
>
> Key: TAJO-1407
> URL: https://issues.apache.org/jira/browse/TAJO-1407
> Project: Tajo
> Issue Type: Improvement
> Components: physical operator
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
>
> Currently, tajo uses Collections.sort() with TupleCompartor, which can incur
> some overheads on comparing.
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