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https://issues.apache.org/jira/browse/SAMZA-1292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16197747#comment-16197747
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ASF GitHub Bot commented on SAMZA-1292:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/samza/pull/320
> Merge operator can be no-op when no streams to merge
> ----------------------------------------------------
>
> Key: SAMZA-1292
> URL: https://issues.apache.org/jira/browse/SAMZA-1292
> Project: Samza
> Issue Type: Bug
> Reporter: Prateek Maheshwari
> Assignee: Prateek Maheshwari
> Priority: Minor
> Fix For: 0.14.0
>
>
> Currently MessageStream#merge(Collection) creates a merge operator even when
> the collection of streams to merge with is empty. Can just return current
> MessageStream in this case as an optimization.
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