[jira] [Commented] (FLINK-17075) Add task status reconciliation between TM and JM

["Till Rohrmann (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-17075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17109116#comment-17109116 ] 

Till Rohrmann commented on FLINK-17075:
---------------------------------------

As a band aid I would suggest to add a small number of retries and then to fail fatally if we could not update the task state. This would, at least, not leave the cluster in an unusable state.

> Add task status reconciliation between TM and JM
> ------------------------------------------------
>
>                 Key: FLINK-17075
>                 URL: https://issues.apache.org/jira/browse/FLINK-17075
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.10.0, 1.11.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>             Fix For: 1.11.0, 1.10.2
>
>
> In order to harden the TM and JM communication I suggest to let the {{TaskExecutor}} send the task statuses back to the {{JobMaster}} as part of the heartbeat payload (similar to FLINK-11059). This would allow to reconcile the states of both components in case that a status update message was lost as described by a user on the ML.
> https://lists.apache.org/thread.html/ra9ed70866381f0ef0f4779633346722ccab3dc0d6dbacce04080b74e%40%3Cuser.flink.apache.org%3E



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