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https://issues.apache.org/jira/browse/FLINK-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14366946#comment-14366946
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ASF GitHub Bot commented on FLINK-1622:
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Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/466#issuecomment-82886862
I would say it's good to go now.
> Add GroupReducePartial Operator
> -------------------------------
>
> Key: FLINK-1622
> URL: https://issues.apache.org/jira/browse/FLINK-1622
> Project: Flink
> Issue Type: Sub-task
> Affects Versions: 0.9
> Reporter: Aljoscha Krettek
>
> This does what a Reduce or GroupReduce Operator does, except it is only
> performed on a local partition.
> This is also similar to an explicit combine that can output a type that is
> different from the input.
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