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Date: Wed, 11 Nov 2015 12:35:10 +0000 (UTC)
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Subject: [jira] [Commented] (FLINK-2942) Dangling operators in web UI's
 program visualization (non-deterministic)
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    [ https://issues.apache.org/jira/browse/FLINK-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000315#comment-15000315 ] 

ASF GitHub Bot commented on FLINK-2942:
---------------------------------------

GitHub user iampeter opened a pull request:

    https://github.com/apache/flink/pull/1346

    Fixed FLINK-2942

    This should fix https://issues.apache.org/jira/browse/FLINK-2942

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/iampeter/flink master

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/1346.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 #1346
    
----
commit 87ce80399ac0192ffccba2dc9fd307e7ebb02d1d
Author: Piotr Godek <piotr.godek@gmail.com>
Date:   2015-11-11T12:32:37Z

    Fixed FLINK-2942

----


> Dangling operators in web UI's program visualization (non-deterministic)
> ------------------------------------------------------------------------
>
>                 Key: FLINK-2942
>                 URL: https://issues.apache.org/jira/browse/FLINK-2942
>             Project: Flink
>          Issue Type: Bug
>          Components: Webfrontend
>    Affects Versions: 0.10
>         Environment: OSX, Firefox and Chrome
>            Reporter: Fabian Hueske
>            Priority: Critical
>             Fix For: 0.10, 1.0
>
>         Attachments: Screen Shot 2015-10-29 at 17.11.19.png, Screen Shot 2015-10-29 at 20.51.46.png, Screen Shot 2015-10-29 at 20.52.13.png, Screen Shot 2015-11-09 at 14.48.03.png
>
>
> When visualizing a program with three {{MapPartition}} operators that branch off from an {{OuterJoin}} operator, two of the three {{MapPartition}} operators are not connected to the {{OuterJoin}} operator and appear to have no input.
> The problem is present in FireFox as well as in Chrome. I'll attach a screenshot.
> The problem and be reproduced by executing the "Cascading for the impatient" [TFIDF example program|https://github.com/Cascading/Impatient/tree/master/part5] using the [Cascading Flink Connector|https://github.com/dataArtisans/cascading-flink].
> Update: It appears that the problem is non-deterministic. I ran the same job again (same setup) and the previously missing connections were visualized. However, the UI showed only one input for a binary operator (OuterJoin). Running the job a third time resulted in a graph layout which was again different from both runs before. However, two of the {{MapPartition}} operators had not inputs just as in the first run.


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