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https://issues.apache.org/jira/browse/YARN-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13632536#comment-13632536
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Bikas Saha commented on YARN-514:
---------------------------------
Sorry for not catching this earlier. RMAppEventType.APP_SAVED will need to be
handled in the KILLED and FAILED states. RMApp can transition into
KILLED/FAILED while waiting for the store operation. After the operation
completes, the current code will crash.
> Delayed store operations should not result in RM unavailability for app
> submission
> ----------------------------------------------------------------------------------
>
> Key: YARN-514
> URL: https://issues.apache.org/jira/browse/YARN-514
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Bikas Saha
> Assignee: Zhijie Shen
> Attachments: YARN-514.1.patch, YARN-514.2.patch, YARN-514.3.patch,
> YARN-514.4.patch, YARN-514.5.patch
>
>
> Currently, app submission is the only store operation performed synchronously
> because the app must be stored before the request returns with success. This
> makes the RM susceptible to blocking all client threads on slow store
> operations, resulting in RM being perceived as unavailable by clients.
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