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https://issues.apache.org/jira/browse/FLINK-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Metzger updated FLINK-1622:
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Component/s: Local Runtime
> Add GroupReducePartial Operator
> -------------------------------
>
> Key: FLINK-1622
> URL: https://issues.apache.org/jira/browse/FLINK-1622
> Project: Flink
> Issue Type: Sub-task
> Components: Local Runtime
> 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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