Details
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Improvement
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Status: Resolved
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Minor
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Resolution: Fixed
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None
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None
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None
Description
TestDelegationTokenRenewer throws some NPEs:
2019-09-25 12:51:23,446 WARN [pool-19-thread-2] security.DelegationTokenRenewer (DelegationTokenRenewer.java:handleDTRenewerAppSubmitEvent(945)) - Unable to add the application to the delegation token renewer. java.lang.NullPointerException at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.handleDTRenewerAppSubmitEvent(DelegationTokenRenewer.java:942) at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.run(DelegationTokenRenewer.java:918) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 2019-09-25 12:51:23,446 DEBUG [main] util.MBeans (MBeans.java:unregister(138)) - Unregistering Hadoop:service=ResourceManager,name=CapacitySchedulerMetrics Exception in thread "pool-19-thread-2" java.lang.NullPointerException at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.handleDTRenewerAppSubmitEvent(DelegationTokenRenewer.java:951) at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.run(DelegationTokenRenewer.java:918) 2019-09-25 12:51:23,447 DEBUG [main] util.MBeans (MBeans.java:unregister(138)) - Unregistering Hadoop:service=ResourceManager,name=MetricsSystem,sub=Stats at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 2019-09-25 12:51:23,447 INFO [main] impl.MetricsSystemImpl (MetricsSystemImpl.java:stop(216)) - ResourceManager metrics system stopped.
the RMContext dispatcher is not set for the RMMock which results in NPE accessing the event handler of the dispatcher inside DelegationTokenRenewer.