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https://issues.apache.org/jira/browse/FLINK-20305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17237578#comment-17237578
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Robert Metzger commented on FLINK-20305:
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[~aljoscha] can you take a look and potentially adjust the priority of this
ticket (Only if you make it a blocker, it'll be considered for delaying the
next RC)
> Iterative job with maxWaitTimeMillis does not terminate
> -------------------------------------------------------
>
> Key: FLINK-20305
> URL: https://issues.apache.org/jira/browse/FLINK-20305
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.12.0
> Reporter: Till Rohrmann
> Priority: Major
> Labels: usability
> Fix For: 1.12.0
>
>
> While testing the {{DataStream}} API, I noticed that an iterative job with
> {{maxWaitTimeMillis}} set, sometimes did not terminate depending on the used
> parallelism. Since I used a bounded source with few events, it looked a bit
> as if the iteration tasks couldn't terminate if they didn't receive an event.
> The corresponding testing job including test data can be found
> [here|https://github.com/tillrohrmann/flink-streaming-batch-execution/tree/iteration-problem].
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