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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4107) Both RM becomes Active if all zookeepers can not connect to active RM
Date Thu, 03 Sep 2015 05:57:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14728544#comment-14728544

Karthik Kambatla commented on YARN-4107:

Is this when using ZKRMStateStore? If yes, the store should take care of transitioning the
RM to standby via its FencingThread. 

Transitioning to standby on neutral mode could adversely affect performance and responsiveness
of the RM in transient network issues. Abstractly, it would be nice if we could detect the
issue is transient vs not; if not transient, transition to standby. 

> Both RM becomes Active if all zookeepers can not connect to active RM
> ---------------------------------------------------------------------
>                 Key: YARN-4107
>                 URL: https://issues.apache.org/jira/browse/YARN-4107
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Xuan Gong
>            Assignee: Xuan Gong
>         Attachments: YARN-4107.1.patch
> Steps to reproduce:
> 1) Run small randomwriter applications in background
> 2) rm1 is active and rm2 is standby 
> 3) Disconnect all Zks and Active RM
> 4) Check status of both RMs. Both of them are in active state

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