[jira] [Resolved] (FLINK-5759) Set an UncaughtExceptionHandler for all Thread Pools in JobManager

["Stephan Ewen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-5759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stephan Ewen resolved FLINK-5759.
---------------------------------
    Resolution: Fixed

Fixed in ef77c254dadbe4c04810681fe765f5ec7d2a7400

> Set an UncaughtExceptionHandler for all Thread Pools in JobManager
> ------------------------------------------------------------------
>
>                 Key: FLINK-5759
>                 URL: https://issues.apache.org/jira/browse/FLINK-5759
>             Project: Flink
>          Issue Type: Bug
>          Components: JobManager
>    Affects Versions: 1.2.0
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>             Fix For: 1.3.0
>
>
> Currently, the thread pools of the {{JobManager}} do not have any {{UncaughtExceptionHandler}}.
> While uncaught exceptions are rare (Flink handles exceptions aggressively in most places), when exceptions slip through in these threads (which execute future responses and delayed actions), the JobManager may be in an inconsistent state and not function properly any more.
> We should add a handler that results in a process kill in the case of uncaught exceptions. Letting the JobManager be restarted by the respective cluster framework is the only guaranteed way to be safe.



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