[HDFS-15297] TestNNHandlesBlockReportPerStorage::blockReport_02 fails intermittently in trunk

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 2.9.3, 3.1.4, 3.2.2, 2.10.1, 3.3.1, 3.4.0
• Component/s: datanode, test
• Hadoop Flags: Reviewed
• Assignee: Ayush Saxena
• Reporter: Mingliang Liu
• Created: 23/Apr/20 20:35
• Updated: 25/Apr/20 23:01
• Resolved: 25/Apr/20 22:51

Description

It fails intermittently on trunk branch. Not sure about other branches. Example builds are:
- https://builds.apache.org/job/hadoop-multibranch/job/PR-1964/4/testReport/org.apache.hadoop.hdfs.server.datanode/TestNNHandlesBlockReportPerStorage/blockReport_02/

• <To add more>

Sample exception stack:

java.lang.AssertionError: Wrong number of MissingBlocks is found expected:<2> but was:<1>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645)
at org.apache.hadoop.hdfs.server.datanode.BlockReportTestBase.blockReport_02(BlockReportTestBase.java:336)
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)