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Posted to issues@flink.apache.org by "Maximilian Michels (JIRA)" <ji...@apache.org> on 2015/10/05 12:07:26 UTC

[jira] [Resolved] (FLINK-2802) Watermark triggered operators cannot progress with cyclic flows

     [ https://issues.apache.org/jira/browse/FLINK-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maximilian Michels resolved FLINK-2802.
---------------------------------------
       Resolution: Fixed
    Fix Version/s: 0.10

As far as I understand this has been resolved. Resolving but feel free to reopen. 

> Watermark triggered operators cannot progress with cyclic flows
> ---------------------------------------------------------------
>
>                 Key: FLINK-2802
>                 URL: https://issues.apache.org/jira/browse/FLINK-2802
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>            Reporter: Gyula Fora
>            Assignee: Gyula Fora
>            Priority: Blocker
>             Fix For: 0.10
>
>
> The problem is that we can easily create a cyclic watermark (time) dependency in the stream graph which will result in a deadlock for watermark triggered operators such as  the `WindowOperator`.
> A solution to this could be to emit a Long.MAX_VALUE watermark from the iteration sources.



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