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From "Till Rohrmann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3347) TaskManager ActorSystems need to restart themselves in case they notice quarantine
Date Fri, 05 Feb 2016 15:09:39 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15134301#comment-15134301
] 

Till Rohrmann commented on FLINK-3347:
--------------------------------------

Haha, I just closed FLINK-3345 as a duplicate of this one. Let's reopen this issue.

> TaskManager ActorSystems need to restart themselves in case they notice quarantine
> ----------------------------------------------------------------------------------
>
>                 Key: FLINK-3347
>                 URL: https://issues.apache.org/jira/browse/FLINK-3347
>             Project: Flink
>          Issue Type: Improvement
>          Components: TaskManager
>    Affects Versions: 0.10.1
>            Reporter: Stephan Ewen
>            Priority: Critical
>             Fix For: 1.0.0
>
>
> There are cases where Akka quarantines remote actor systems. In that case, no further
communication is possible with that actor system unless one of the two actor systems is restarted.
> The result is that a TaskManager is up and available, but cannot register at the JobManager
(Akka refuses connection because of the quarantined state), making the TaskManager a useless
process.
> I suggest to let the TaskManager restart itself once it notices that either it quarantined
the JobManager, or the JobManager quarantined it.
> It is possible to recognize that by listening to certain events in the actor system event
stream: http://stackoverflow.com/questions/32471088/akka-cluster-detecting-quarantined-state



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