[jira] [Resolved] (MAPREDUCE-3410) Capacity scheduler reconfiguration of queues does not work for add sub-queues to an existing queue

["Arun C Murthy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy resolved MAPREDUCE-3410.
--------------------------------------

    Resolution: Later

For now we should punt on this - this is akin to 'delete queue' as Jason explained.
                
> Capacity scheduler reconfiguration of queues does not work for add sub-queues to an existing queue
> --------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3410
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3410
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Anupam Seth
>
> If we have an existing queue configuration such as 
> root
>  |---> A
>  |---> B
> and we attempt to reconfigure it so that we now have
> root
>  |---> A
>        |---> A1
>        |---> A2
>  |---> B
> we get an IOException as follows:
> java.io.IOException: Failed to re-init queues
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitialize(CapacityScheduler.java:197)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue.testInitializeQueue(TestLeafQueue.java:206)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> 	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
> 	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
> 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
> 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
> 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
> 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
> 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
> 	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
> 	at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:45)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
> 	at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
> 	at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:172)
> 	at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:78)
> 	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:70)
> Caused by: java.io.IOException: Trying to reinitialize root.a from root.a
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.reinitialize(LeafQueue.java:524)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.reinitialize(ParentQueue.java:360)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitializeQueues(CapacityScheduler.java:240)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitialize(CapacityScheduler.java:194)
> 	... 32 more
> This is apparently because the CapacityScheduler still wants to think of A as a LeafQueue instead of realizing it to be updated as a ParentQueue.
> Maybe, this use case is not supposed to be supported, in which case, probably the documentation should be updated to state this scenario as such more clearly (currently, it atleast implies that only deletion is not supported).

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