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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5985) Flink treats every task as stateful (making topology changes impossible)
Date Wed, 15 Mar 2017 09:07:41 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15925776#comment-15925776

ASF GitHub Bot commented on FLINK-5985:

Github user StefanRRichter commented on the issue:

    Ok, then the mystery is finally solved :-) Thanks again for reporting this problem and
your additional testing efforts!

> Flink treats every task as stateful (making topology changes impossible)
> ------------------------------------------------------------------------
>                 Key: FLINK-5985
>                 URL: https://issues.apache.org/jira/browse/FLINK-5985
>             Project: Flink
>          Issue Type: Bug
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.2.0
>            Reporter: Gyula Fora
>            Priority: Critical
> It seems  that Flink treats every Task as stateful so changing the topology is not possible
without setting uid on every single operator.
> If the topology has an iteration this is virtually impossible (or at least gets super

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