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https://issues.apache.org/jira/browse/TAJO-1920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985596#comment-14985596
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ASF GitHub Bot commented on TAJO-1920:
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Github user asfgit closed the pull request at:
https://github.com/apache/tajo/pull/816
> Calling 'Collection.toArray()' with zero-length array argument makes
> performance worse
> --------------------------------------------------------------------------------------
>
> Key: TAJO-1920
> URL: https://issues.apache.org/jira/browse/TAJO-1920
> Project: Tajo
> Issue Type: Improvement
> Reporter: Dongkyu Hwangbo
> Assignee: Dongkyu Hwangbo
> Priority: Minor
> Labels: newbie
> Fix For: 0.12.0
>
>
> When passing in an array of too small size, the {{toArray()}} method has to
> construct a new array of the right size using reflection. This has
> significantly worse performance than passing in an array of at least the size
> of the collection itself.
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