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From "Stephan Ewen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (FLINK-2942) Dangling operators in web UI's program visualization (non-deterministic)
Date Wed, 18 Nov 2015 18:16:11 GMT

     [ https://issues.apache.org/jira/browse/FLINK-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stephan Ewen resolved FLINK-2942.
---------------------------------
       Resolution: Fixed
         Assignee: Piotr Godek
    Fix Version/s: 0.10.1

Fixed in
  - 0.10.1 via 9895e3e43823be11f058a00b9c4eb0c049dd91a8
  - 1.0.0 via fc6fec78685ea4add6dec15b72e08d5daac5bea4

> 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: 0.10.0
>         Environment: OSX, Firefox and Chrome
>            Reporter: Fabian Hueske
>            Assignee: Piotr Godek
>            Priority: Critical
>             Fix For: 1.0.0, 0.10.1
>
>         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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