[HDFS-14677] TestDataNodeHotSwapVolumes#testAddVolumesConcurrently fails intermittently in trunk

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Hadoop Flags: Reviewed
• Assignee: Chen Zhang
• Reporter: Chen Zhang
• Created: 29/Jul/19 15:21
• Updated: 30/Jul/19 19:37
• Resolved: 30/Jul/19 17:00

Description

Stacktrace:

java.lang.NullPointerException
	at org.apache.hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes.testAddVolumesConcurrently(TestDataNodeHotSwapVolumes.java:615)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)

see: https://builds.apache.org/job/PreCommit-HDFS-Build/27328/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeHotSwapVolumes/testAddVolumesConcurrently/

and https://builds.apache.org/job/PreCommit-HDFS-Build/27312/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeHotSwapVolumes/testAddVolumesConcurrently/