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From "Bilwa S T (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8897) LoadBasedRouterPolicy throws "NPE" in case of sub cluster unavailability
Date Sun, 28 Oct 2018 07:58:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16666321#comment-16666321
] 

Bilwa S T commented on YARN-8897:
---------------------------------

[~bibinchundatt]
 Yeah i agree. i will update the patch

> LoadBasedRouterPolicy throws "NPE" in case of sub cluster unavailability 
> -------------------------------------------------------------------------
>
>                 Key: YARN-8897
>                 URL: https://issues.apache.org/jira/browse/YARN-8897
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: federation, router
>            Reporter: Akshay Agarwal
>            Assignee: Bilwa S T
>            Priority: Minor
>         Attachments: YARN-8897-001.patch
>
>
> If no sub clusters are available for "*Load Based Router Policy*" with *cluster weight*
as *1*  in Router Based Federation Setup , throwing "*NullPointerException*".
>  
> *Exception Details:*
> {code:java}
> java.lang.NullPointerException: java.lang.NullPointerException
>  at org.apache.hadoop.yarn.server.federation.policies.router.LoadBasedRouterPolicy.getHomeSubcluster(LoadBasedRouterPolicy.java:99)
>  at org.apache.hadoop.yarn.server.federation.policies.RouterPolicyFacade.getHomeSubcluster(RouterPolicyFacade.java:204)
>  at org.apache.hadoop.yarn.server.router.clientrm.FederationClientInterceptor.submitApplication(FederationClientInterceptor.java:362)
>  at org.apache.hadoop.yarn.server.router.clientrm.RouterClientRMService.submitApplication(RouterClientRMService.java:218)
>  at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.submitApplication(ApplicationClientProtocolPBServiceImpl.java:282)
>  at org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:579)
>  at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
>  at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
>  at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:872)
>  at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:818)
>  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:1729)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2678)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
>  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>  at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
>  at org.apache.hadoop.yarn.ipc.RPCUtil.instantiateException(RPCUtil.java:53)
>  at org.apache.hadoop.yarn.ipc.RPCUtil.instantiateRuntimeException(RPCUtil.java:85)
>  at org.apache.hadoop.yarn.ipc.RPCUtil.unwrapAndThrowException(RPCUtil.java:122)
>  at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.submitApplication(ApplicationClientProtocolPBClientImpl.java:297)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke(Method.java:498)
>  at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
>  at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
>  at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
>  at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
>  at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
>  at com.sun.proxy.$Proxy15.submitApplication(Unknown Source)
>  at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.submitApplication(YarnClientImpl.java:288)
>  at org.apache.hadoop.mapred.ResourceMgrDelegate.submitApplication(ResourceMgrDelegate.java:300)
>  at org.apache.hadoop.mapred.YARNRunner.submitJob(YARNRunner.java:331)
>  at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:254)
>  at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1570)
>  at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1567)
>  at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:422)
>  at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
>  at org.apache.hadoop.mapreduce.Job.submit(Job.java:1567)
>  at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1588)
>  at org.apache.hadoop.examples.QuasiMonteCarlo.estimatePi(QuasiMonteCarlo.java:307)
>  at org.apache.hadoop.examples.QuasiMonteCarlo.run(QuasiMonteCarlo.java:360)
>  at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
>  at org.apache.hadoop.examples.QuasiMonteCarlo.main(QuasiMonteCarlo.java:368)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke(Method.java:498)
>  at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
>  at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
>  at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke(Method.java:498)
>  at org.apache.hadoop.util.RunJar.run(RunJar.java:318)
>  at org.apache.hadoop.util.RunJar.main(RunJar.java:232)
>  Caused by: org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): java.lang.NullPointerException
>  at org.apache.hadoop.yarn.server.federation.policies.router.LoadBasedRouterPolicy.getHomeSubcluster(LoadBasedRouterPolicy.java:99)
>  at org.apache.hadoop.yarn.server.federation.policies.RouterPolicyFacade.getHomeSubcluster(RouterPolicyFacade.java:204)
>  at org.apache.hadoop.yarn.server.router.clientrm.FederationClientInterceptor.submitApplication(FederationClientInterceptor.java:362)
>  at org.apache.hadoop.yarn.server.router.clientrm.RouterClientRMService.submitApplication(RouterClientRMService.java:218)
>  at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.submitApplication(ApplicationClientProtocolPBServiceImpl.java:282)
>  at org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:579)
>  at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
>  at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
>  at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:872)
>  at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:818)
>  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:1729)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2678)
> {code}



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