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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7371) NPE in ServiceMaster after RM is restarted and then the ServiceMaster is killed
Date Thu, 02 Nov 2017 20:24:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16236524#comment-16236524
] 

Jian He commented on YARN-7371:
-------------------------------

there are some flaky tests, most of the time, if it can pass locally without issues, then
we should be fine.

> NPE in ServiceMaster after RM is restarted and then the ServiceMaster is killed
> -------------------------------------------------------------------------------
>
>                 Key: YARN-7371
>                 URL: https://issues.apache.org/jira/browse/YARN-7371
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Chandni Singh
>            Assignee: Chandni Singh
>            Priority: Major
>         Attachments: YARN-7371-yarn-native-services.001.patch, YARN-7371-yarn-native-services.002.patch,
YARN-7371-yarn-native-services.003.patch, YARN-7371-yarn-native-services.004.patch, YARN-7371-yarn-native-services.005.patch
>
>
> java.lang.NullPointerException
> at org.apache.hadoop.yarn.service.ServiceScheduler.recoverComponents(ServiceScheduler.java:313)
> at org.apache.hadoop.yarn.service.ServiceScheduler.serviceStart(ServiceScheduler.java:265)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at org.apache.hadoop.yarn.service.ServiceMaster.main(ServiceMaster.java:150)
> Steps:
> 1. Stopped RM and then started it
> 2. Application was still running
> 3. Killed the ServiceMaster to check if it recovers
> 4. Next attempt failed with the above exception



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