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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2588) Standby RM does not transitionToActive if previous transitionToActive is failed with ZK exception.
Date Fri, 17 Oct 2014 05:09:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14174726#comment-14174726
] 

Jian He commented on YARN-2588:
-------------------------------

I traced the code ApplicationACLsManager/QueueACLsManager were earlier used by RMWebService
for injection. this binding seems not necessary anymore. But anyways, this doesn't matter
too much? as these two are just two classes and they are not extending service.

another minor comment in the patch, add {{Assert.fail()}} after {{rm.adminService.transitionToActive(requestInfo);}}
{code}
try {
+      rm.adminService.transitionToActive(requestInfo);
+    } catch (Exception e) {
+      assertTrue("Error when transitioning to Active mode".contains(e
+          .getMessage()));
+    }
{code}

> Standby RM does not transitionToActive if previous transitionToActive is failed with
ZK exception.
> --------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2588
>                 URL: https://issues.apache.org/jira/browse/YARN-2588
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 3.0.0, 2.6.0, 2.5.1
>            Reporter: Rohith
>            Assignee: Rohith
>         Attachments: YARN-2588.1.patch, YARN-2588.patch
>
>
> Consider scenario where, StandBy RM is failed to transition to Active because of ZK exception(connectionLoss
or SessionExpired). Then any further transition to Active for same RM does not move RM to
Active state.



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