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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-6555) Enable flow context read (& corresponding write) for recovering application with NM restart
Date Thu, 04 May 2017 00:02:04 GMT
Vrushali C created YARN-6555:
--------------------------------

             Summary: 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
            Reporter: Vrushali C
            Assignee: Vrushali C



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.


{code}

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}

{code}



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