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Posted to yarn-issues@hadoop.apache.org by "Jiandan Yang (JIRA)" <ji...@apache.org> on 2019/03/20 04:23:00 UTC
[jira] [Commented] (YARN-8464) Async scheduling thread could be
interrupted when there are no NodeManagers in cluster
[ https://issues.apache.org/jira/browse/YARN-8464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16796781#comment-16796781 ]
Jiandan Yang commented on YARN-8464:
-------------------------------------
Hi, [~leftnoteasy], Could you give more detail analysis? I do not understand why job is accepted forever when all NMs are running?
> Async scheduling thread could be interrupted when there are no NodeManagers in cluster
> --------------------------------------------------------------------------------------
>
> Key: YARN-8464
> URL: https://issues.apache.org/jira/browse/YARN-8464
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Charan Hebri
> Assignee: Sunil Govindan
> Priority: Blocker
> Fix For: 3.2.0, 3.1.1
>
> Attachments: YARN-8464.001.patch, YARN-8464.002.patch
>
>
> Test scenario:
> 1. Make either yarn.nodemanager.log-dirs/yarn.nodemanager.local-dirs read-only
> 2. Restart NMs via Ambari, none of them show up in the RM UI as expected
> 3. Revert back the read-only dirs and restart NMs
> 4. Include a non-existent dir in either yarn.nodemanager.log-dirs/yarn.nodemanager.local-dirs (1 good existing dir + 1 non-existing dir)
> 5. Restart NMs via Ambari, all NMs show as RUNNING with a Health Report message as expected
> 6. Submit a MapReduce sleep job, job goes into ACCEPTED state
> 7. Job stays in ACCEPTED state forever even though all NMs are running and have available memory
>
> Credits to [~charanh] who found this issue.
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