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Posted to issues-all@impala.apache.org by "Thomas Tauber-Marshall (JIRA)" <ji...@apache.org> on 2019/04/30 17:01:00 UTC

[jira] [Resolved] (IMPALA-2990) Coordinator should timeout and cancel queries with unresponsive / stuck executors

     [ https://issues.apache.org/jira/browse/IMPALA-2990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Tauber-Marshall resolved IMPALA-2990.
--------------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> Coordinator should timeout and cancel queries with unresponsive / stuck executors
> ---------------------------------------------------------------------------------
>
>                 Key: IMPALA-2990
>                 URL: https://issues.apache.org/jira/browse/IMPALA-2990
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Distributed Exec
>    Affects Versions: Impala 2.3.0
>            Reporter: Sailesh Mukil
>            Assignee: Thomas Tauber-Marshall
>            Priority: Critical
>              Labels: hang, observability, supportability
>             Fix For: Impala 3.3.0
>
>
> The coordinator currently waits indefinitely if it does not hear back from a backend. This could cause a query to hang indefinitely in case of a network error, etc.
> We should add logic for determining when a backend is unresponsive and kill the query. The logic should mostly revolve around Coordinator::Wait() and Coordinator::UpdateFragmentExecStatus() based on whether it receives periodic updates from a backed (via FragmentExecState::ReportStatusCb()).



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