zhoulinlin created YARN-3645:
--------------------------------

             Summary: ResourceManager can't start success if  attribute value 
of "aclSubmitApps" is null in fair-scheduler.xml
                 Key: YARN-3645
                 URL: https://issues.apache.org/jira/browse/YARN-3645
             Project: Hadoop YARN
          Issue Type: Bug
          Components: fairscheduler
    Affects Versions: 2.5.2
            Reporter: zhoulinlin


The "aclSubmitApps" is configured in fair-scheduler.xml like below:
<queue name="mr">
            <aclSubmitApps></aclSubmitApps>
 </queue>

The resourcemanager log:
2015-05-14 12:59:48,623 INFO org.apache.hadoop.service.AbstractService: Service 
ResourceManager failed in state INITED; cause: 
org.apache.hadoop.service.ServiceStateException: java.io.IOException: Failed to 
initialize FairScheduler
org.apache.hadoop.service.ServiceStateException: java.io.IOException: Failed to 
initialize FairScheduler
        at 
org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
        at 
org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:493)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:920)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:240)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1159)
Caused by: java.io.IOException: Failed to initialize FairScheduler
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.initScheduler(FairScheduler.java:1301)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.serviceInit(FairScheduler.java:1318)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        ... 7 more
Caused by: java.lang.NullPointerException
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AllocationFileLoaderService.loadQueue(AllocationFileLoaderService.java:458)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AllocationFileLoaderService.reloadAllocations(AllocationFileLoaderService.java:337)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.initScheduler(FairScheduler.java:1299)
        ... 9 more
2015-05-14 12:59:48,623 INFO 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Transitioning to 
standby state
2015-05-14 12:59:48,623 INFO 
com.zte.zdh.platformplugin.factory.YarnPlatformPluginProxyFactory: plugin 
transitionToStandbyIn
2015-05-14 12:59:48,623 WARN org.apache.hadoop.service.AbstractService: When 
stopping the service ResourceManager : java.lang.NullPointerException
java.lang.NullPointerException
        at 
com.zte.zdh.platformplugin.factory.YarnPlatformPluginProxyFactory.transitionToStandbyIn(YarnPlatformPluginProxyFactory.java:71)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToStandby(ResourceManager.java:997)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStop(ResourceManager.java:1058)
        at 
org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
        at 
org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
        at 
org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:171)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1159)
2015-05-14 12:59:48,623 FATAL 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error starting 
ResourceManager
org.apache.hadoop.service.ServiceStateException: java.io.IOException: Failed to 
initialize FairScheduler
        at 
org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
        at 
org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:493)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:920)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:240)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1159)
Caused by: java.io.IOException: Failed to initialize FairScheduler
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.initScheduler(FairScheduler.java:1301)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.serviceInit(FairScheduler.java:1318)
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        ... 7 more
Caused by: java.lang.NullPointerException
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AllocationFileLoaderService.loadQueue(AllocationFileLoaderService.java:458)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AllocationFileLoaderService.reloadAllocations(AllocationFileLoaderService.java:337)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.initScheduler(FairScheduler.java:1299)
        ... 9 more
2015-05-14 12:59:48,624 INFO 
com.zte.zdh.platformplugin.factory.YarnPlatformPluginProxyFactory: plugin 
shutdown
2015-05-14 12:59:48,624 ERROR 
org.apache.hadoop.yarn.YarnUncaughtExceptionHandler: Thread Thread[main,5,main] 
threw an Exception.
java.lang.NullPointerException
        at 
com.zte.zdh.platformplugin.factory.YarnPlatformPluginProxyFactory.shutdown(YarnPlatformPluginProxyFactory.java:63)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1167)
2015-05-14 12:59:48,627 INFO 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: SHUTDOWN_MSG: 

the reason:
The method loadQueue in AllocationFileLoaderService.java :

else if ("aclSubmitApps".equals(field.getTagName())) {
        String text = ((Text)field.getFirstChild()).getData();
        acls.put(QueueACL.SUBMIT_APPLICATIONS, new  AccessControlList(text));
      }


We  should check whether getFirstChild() is null.




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