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https://issues.apache.org/jira/browse/YARN-3410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14500268#comment-14500268
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Wangda Tan commented on YARN-3410:
----------------------------------
One question:
What will happen if a running app is removed from state store while RM is
running, will it cause state corrupted? I think RM will check pid while start
to avoid this case, correct?
And tried to deploy a local cluster to try this, everything works fine, one
minor comment about usage:
{code}
Usage: java ResourceManager [-format-state-store] |
[-remove-application-from-state-store <ApplicationId>]
{code}
Better to format it to?
{code}
Usage: yarn resourcemanager [-format-state-store]
[-remove..] <appId>
{code}
> YARN admin should be able to remove individual application records from
> RMStateStore
> ------------------------------------------------------------------------------------
>
> Key: YARN-3410
> URL: https://issues.apache.org/jira/browse/YARN-3410
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager, yarn
> Reporter: Wangda Tan
> Assignee: Rohith
> Priority: Critical
> Attachments: 0001-YARN-3410-v1.patch, 0001-YARN-3410.patch,
> 0001-YARN-3410.patch, 0002-YARN-3410.patch, 0003-YARN-3410.patch
>
>
> When RM state store entered an unexpected state, one example is YARN-2340,
> when an attempt is not in final state but app already completed, RM can never
> get up unless format RMStateStore.
> I think we should support remove individual application records from
> RMStateStore to unblock RM admin make choice of either waiting for a fix or
> format state store.
> In addition, RM should be able to report all fatal errors (which will
> shutdown RM) when doing app recovery, this can save admin some time to remove
> apps in bad state.
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