[jira] [Assigned] (YARN-1556) NPE getting application report with a null appId

["haosdent (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-1556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

haosdent reassigned YARN-1556:
------------------------------

    Assignee: haosdent

> NPE getting application report with a null appId
> ------------------------------------------------
>
>                 Key: YARN-1556
>                 URL: https://issues.apache.org/jira/browse/YARN-1556
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Steve Loughran
>            Assignee: haosdent
>            Priority: Trivial
>
> If you accidentally pass in a null appId to get application report, you get an NPE back. This is arguably as intended, except that maybe a guard statement could report this in such a way as to make it easy for callers to track down the cause.
> {code}
> java.lang.NullPointerException: java.lang.NullPointerException
> org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): java.lang.NullPointerException
> 	at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
> 	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.getApplicationReport(ClientRMService.java:243)
> 	at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.getApplicationReport(ApplicationClientProtocolPBServiceImpl.java:120)
> 	at org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:241)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)
> 	at org.apache.hadoop.ipc.Client.call(Client.java:1347)
> 	at org.apache.hadoop.ipc.Client.call(Client.java:1300)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
> 	at com.sun.proxy.$Proxy75.getApplicationReport(Unknown Source)
> 	at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getApplicationReport(ApplicationClientProtocolPBClientImpl.java:137)
> 	... 28 more
> {code}



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