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From "Julia (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (REEF-1511) timeout for Task Shutdown during IMRU recovery
Date Thu, 08 Dec 2016 23:10:58 GMT

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

Julia reassigned REEF-1511:
---------------------------

    Assignee: Julia

> 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
>            Assignee: Julia
>              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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