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https://issues.apache.org/jira/browse/FLINK-3899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15433654#comment-15433654
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ASF GitHub Bot commented on FLINK-3899:
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Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/2368
Thanks for the fast update @danielblazevski.
I think you accidentally added `tools/FlinkCodyStyle.xml` to your commit.
> Document window processing with Reduce/FoldFunction + WindowFunction
> --------------------------------------------------------------------
>
> Key: FLINK-3899
> URL: https://issues.apache.org/jira/browse/FLINK-3899
> Project: Flink
> Issue Type: Improvement
> Components: Documentation, Streaming
> Affects Versions: 1.1.0
> Reporter: Fabian Hueske
>
> The streaming documentation does not describe how windows can be processed
> with FoldFunction or ReduceFunction and a subsequent WindowFunction. This
> combination allows for eager window aggregation (only a single element is
> kept in the window) and access of the Window object, e.g., to have access to
> the window's start and end time.
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