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Posted to dev@reef.apache.org by "Julia (JIRA)" <ji...@apache.org> on 2016/08/09 18:30:21 UTC

[jira] [Updated] (REEF-1511) timeout for Task Shutdown during IMRU recovery

     [ https://issues.apache.org/jira/browse/REEF-1511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julia updated REEF-1511:
------------------------
    Labels: FT  (was: )

> timeout for Task Shutdown during IMRU recovery
> ----------------------------------------------
>
>                 Key: REEF-1511
>                 URL: https://issues.apache.org/jira/browse/REEF-1511
>             Project: REEF
>          Issue Type: Improvement
>          Components: IMRU
>            Reporter: Andrey
>              Labels: FT
>
> This related to fault tolerance implementation in PR-1251.
> Currently recovery logic in IMRU driver is to wait for all task to move to a final state (failed or completed) before restarting the job check AreAllTasksInFinalState() in TryRecovery() method)
> We've seen driver hanging for a long time waiting for few last tasks finalize.
> Aborting tasks should be quick, so there is bug there, but we also can add logic in driver not to wait for all tasks to complete.
> For instance: if 5% of tasks did not report final state withing expected period, release corresponding evaluators  and proceed with new job retry.



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