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Date: Fri, 22 Jan 2016 15:23:40 +0000 (UTC)
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Subject: [jira] [Commented] (FLINK-3178) Make Closing Behavior of Window
 Operators Configurable
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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 ] 

ASF GitHub Bot commented on FLINK-3178:
---------------------------------------

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 <aljoscha.krettek@gmail.com>
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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