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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2579) Both RM's state is Active , but 1 RM is not really active.
Date Wed, 05 Nov 2014 08:39:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197890#comment-14197890

Vinod Kumar Vavilapalli commented on YARN-2579:

Tx for working on this [~rohithsharma]!

The abstractions are all broken in this part of the code-base, but it's not your fault. Given
this is a blocker, your approach to minimize the changes is good!

One comment: This still is invoking transitionToStandby in the RMStateStore's dispatcher.
So what we will see is the following
RMStateStoreDispatcher.handle() -> store fails in the event, generates a notifyStoreOperationFailed
-> invokes resourceManager.handleTransitionToStandBy -> calls transitionToStandby(boolean)
-> activeServices.stop() -> stateStore.close() -> RMStateStoreDispatcher.stop()

We should avoid these dispatcher events trying to close the dispatchers - that was why I suggested
a separate thread (my point 2.2 in the proposal).

> Both RM's state is Active , but 1 RM is not really active.
> ----------------------------------------------------------
>                 Key: YARN-2579
>                 URL: https://issues.apache.org/jira/browse/YARN-2579
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.1
>            Reporter: Rohith
>            Assignee: Rohith
>            Priority: Blocker
>         Attachments: YARN-2579-20141105.1.patch, YARN-2579-20141105.patch, YARN-2579.patch,
> I encountered a situaltion where both RM's web page was able to access and its state
displayed as Active. But One of the RM's ActiveServices were stopped.

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