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https://issues.apache.org/jira/browse/FLINK-23512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yun Gao resolved FLINK-23512.
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Resolution: Fixed
> Check for illegal modifications of JobGraph with partially finished operators
> -----------------------------------------------------------------------------
>
> Key: FLINK-23512
> URL: https://issues.apache.org/jira/browse/FLINK-23512
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Checkpointing
> Affects Versions: 1.14.0
> Reporter: Yun Gao
> Assignee: Yun Gao
> Priority: Major
> Labels: pull-request-available
>
> Besides the fully finished operators, we also would like to disable inserting
> new operators before the partially finished operators:
> # If keyed state is used and discarded after the tasks get finished in the
> first run, then if we received new records target at these keys, the result
> would be not right.
> # Similarly, for normal operator subtasks, if new records are emitted and
> they relies on the discarded states, the result would also be confused.
> Thus we would first disable such cases.
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