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From "Till Rohrmann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7541) Redistribute operator state using OperatorID
Date Tue, 26 Sep 2017 07:12:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180362#comment-16180362
] 

Till Rohrmann commented on FLINK-7541:
--------------------------------------

Please don't close this JIRA, because the commit was reverted with 142bde0e8410224de821cefe3876afb8bc6aaf1a.
The reason was that the usage of {{Multimap}} cause the {{OperatorSubtaskState}} to be no
longer serializable (more specifically {{ArrayListMultimap#get}} returns a {{Collection}}
which is not {{Serializable}}). This was visible due to the failing {{WindowCheckpointingITCase}}.

> 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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