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https://issues.apache.org/jira/browse/FLINK-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15027445#comment-15027445
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Stephan Ewen commented on FLINK-788:
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I thought they did now, but not quite sure any more ;-)
If you share the variable under the same ID and everything, then the singleton
materialization may even be able to just materialize it once (across combiner
and reducer) if they are on the same TaskManager instance.
> Enable combiner for Reduce with Broadcast Variable
> --------------------------------------------------
>
> Key: FLINK-788
> URL: https://issues.apache.org/jira/browse/FLINK-788
> Project: Flink
> Issue Type: Improvement
> Reporter: GitHub Import
> Priority: Minor
> Labels: github-import
> Fix For: pre-apache
>
>
> If the `ReduceFunction` uses a broadcast variable, we can currently not
> execute the combiner side of the function. The reason is that the combiner is
> inserted dynamically and has no access to the broadcast variable.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/788
> Created by: [StephanEwen|https://github.com/StephanEwen]
> Labels:
> Created at: Mon May 12 03:01:18 CEST 2014
> State: open
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