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https://issues.apache.org/jira/browse/FLINK-7541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180404#comment-16180404
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ASF GitHub Bot commented on FLINK-7541:
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Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/4609
Please don't close this PR, because the commit was reverted. Using
`Multimap#get` in the `StateAssignmentOperation` makes the
`OperatorSubtaskState` not serializable. The `WindowCheckpointingITCase` caught
the problem.
> Redistribute operator state using OperatorID
> --------------------------------------------
>
> Key: FLINK-7541
> URL: https://issues.apache.org/jira/browse/FLINK-7541
> Project: Flink
> Issue Type: Improvement
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
>
> Currently StateAssignmentOperation relays heavily on the order of new and old
> operators in the task. It should be changed and it should relay more on
> OperatorID.
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