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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