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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-6555) Enable flow context read (& corresponding write) for recovering application with NM restart
Date Mon, 22 May 2017 06:27:04 GMT

     [ https://issues.apache.org/jira/browse/YARN-6555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rohith Sharma K S reassigned YARN-6555:
---------------------------------------

    Assignee: Rohith Sharma K S  (was: Vrushali C)

> Enable flow context read (& corresponding write) for recovering application with
NM restart 
> --------------------------------------------------------------------------------------------
>
>                 Key: YARN-6555
>                 URL: https://issues.apache.org/jira/browse/YARN-6555
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-5355, YARN-5355-branch-2, 3.0.0-alpha3
>            Reporter: Vrushali C
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-6555.001.patch
>
>
> If timeline service v2 is enabled and NM is restarted with recovery enabled, then NM
fails to start and throws an error as  "flow context can't be null".
> This is happening because the flow context did not exist before but now that timeline
service v2 is enabled, ApplicationImpl expects it to exist. 
> This would also happen even if flow context existed before but since we are not persisting
it / reading it during ContainerManagerImpl#recoverApplication, it does not get passed in
to ApplicationImpl.
> full stack trace
> {code}
> 2017-05-03 21:51:52,178 FATAL org.apache.hadoop.yarn.server.nodemanager.NodeManager:
Error starting NodeManager
> java.lang.IllegalArgumentException: flow context cannot be null
>         at org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl.<init>(ApplicationImpl.java:104)
>         at org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl.<init>(ApplicationImpl.java:90)
>         at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recoverApplication(ContainerManagerImpl.java:318)
>         at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover(ContainerManagerImpl.java:280)
>         at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:267)
>         at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:276)
>         at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:588)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:649)
> {code}



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