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https://issues.apache.org/jira/browse/FLINK-3977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15321226#comment-15321226
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ASF GitHub Bot commented on FLINK-3977:
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GitHub user rvdwenden opened a pull request:
https://github.com/apache/flink/pull/2086
[FLINK-3977] initialize FoldApplyWindowFunction properly
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rvdwenden/flink master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2086.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2086
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commit b4b42f1584cbc909c85fbd6ab47aa4a7166f9043
Author: rvdwenden <[email protected]>
Date: 2016-06-08T18:53:51Z
[FLINK-3977] initialize FoldApplyWindowFunction properly
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> Subclasses of InternalWindowFunction must support OutputTypeConfigurable
> ------------------------------------------------------------------------
>
> Key: FLINK-3977
> URL: https://issues.apache.org/jira/browse/FLINK-3977
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
> Priority: Critical
>
> Right now, if they wrap functions and a wrapped function implements
> {{OutputTypeConfigurable}}, {{setOutputType}} is never called. This manifests
> itself, for example, in FoldFunction on a window with evictor not working.
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