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https://issues.apache.org/jira/browse/YARN-6207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874336#comment-15874336
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Naganarasimha G R commented on YARN-6207:
-----------------------------------------
Thanks [~rohithsharma] & [~sunilg]
bq. And also we discussed that move application should never-fail if
application attempt is not added yet.
Yes. This is what i was trying to signify by saying once the app is accepted by
the scheduler then there should not be any reason to reject the move
application. And roughly Me and [~bibinchundatt] were discussing the same as it
was easily acheiveable by updating {{SchedulerApplication.setQueue}} at the
same we need to ensure that the parent queue stats are updated accordingly.
When AppAttempt gets added anyway its taking the queue information from
{{SchedulerApplication}} so though attempt is not there when attempt gets added
it works properly.
bq. May be new flag is required to identify in SchedulerApplicationAttempt that
done-app-attempt is called-off or not.
Agree that there is a corner race case where in 2 Attempts can be added to the
target queue when the events which are triggered are
{{doneApplicationAttempt->moveApplication-> addApplicationAttempt (new
attempt)}}. And for this we can have a flag in SchedulerApplication present in
CS.
Hope with above modifications all concerns will be solved, Thoughts?
> Move application can fail when attempt add event is delayed
> ------------------------------------------------------------
>
> Key: YARN-6207
> URL: https://issues.apache.org/jira/browse/YARN-6207
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Bibin A Chundatt
> Assignee: Bibin A Chundatt
> Attachments: YARN-6207.001.patch, YARN-6207.002.patch
>
>
> *Steps to reproduce*
> 1.Submit application and delay attempt add to Scheduler
> (Simulate using debug at EventDispatcher for SchedulerEventDispatcher)
> 2. Call move application to destination queue.
> {noformat}
> Caused by:
> org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException):
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.preValidateMoveApplication(CapacityScheduler.java:2086)
> at
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.moveApplicationAcrossQueue(RMAppManager.java:669)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.moveApplicationAcrossQueues(ClientRMService.java:1231)
> at
> org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.moveApplicationAcrossQueues(ApplicationClientProtocolPBServiceImpl.java:388)
> at
> org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:537)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:522)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:867)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:813)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1892)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2659)
> at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1483)
> at org.apache.hadoop.ipc.Client.call(Client.java:1429)
> at org.apache.hadoop.ipc.Client.call(Client.java:1339)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:227)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:115)
> at com.sun.proxy.$Proxy7.moveApplicationAcrossQueues(Unknown Source)
> at
> org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.moveApplicationAcrossQueues(ApplicationClientProtocolPBClientImpl.java:398)
> ... 16 more
> {noformat}
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