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https://issues.apache.org/jira/browse/FLINK-3178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112529#comment-15112529
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ASF GitHub Bot commented on FLINK-3178:
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GitHub user aljoscha opened a pull request:
https://github.com/apache/flink/pull/1542
[FLINK-3178] Don't Emit In-Flight Windows When Closing Window Operator
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aljoscha/flink window-no-final-emit
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1542.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 #1542
----
commit 2f4a15491cc7d307deb1f59d26980df72307b914
Author: Aljoscha Krettek <[email protected]>
Date: 2016-01-18T12:25:03Z
[FLINK-3178] Don't Emit In-Flight Windows When Closing Window Operator
----
> Make Closing Behavior of Window Operators Configurable
> ------------------------------------------------------
>
> Key: FLINK-3178
> URL: https://issues.apache.org/jira/browse/FLINK-3178
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Affects Versions: 1.0.0
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
> Priority: Blocker
>
> Right now, all window operators emit (incomplete) in-flight windows when they
> are closing down. This happens for two reasons:
> 1. sources emit a final Long.MAX_VALUE watermark to flush out windows when
> they close.
> 2. window operators emit in-flight windows in their close() method
> For some users this might not be the desired behavior so we should either
> change it or make it configurable.
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