[HDFS-13662] TestBlockReaderLocal#testStatisticsForErasureCodingRead is flaky

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.2.0
• Component/s: erasure-coding, test
• Hadoop Flags: Reviewed
• Assignee: Xiao Chen
• Reporter: Wei-Chiu Chuang
• Created: 07/Jun/18 16:24
• Updated: 17/Oct/18 02:37
• Resolved: 17/Oct/18 02:35

Description

The test failed in this precommit for a patch that only modifies an unrelated test.
https://builds.apache.org/job/PreCommit-HDFS-Build/24401/testReport/org.apache.hadoop.hdfs.client.impl/TestBlockReaderLocal/testStatisticsForErasureCodingRead/

This test also failed occasionally in our internal test.

Stacktrace
java.lang.AssertionError
	at org.junit.Assert.fail(Assert.java:86)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.junit.Assert.assertTrue(Assert.java:52)
	at org.apache.hadoop.hdfs.client.impl.TestBlockReaderLocal.testStatisticsForErasureCodingRead(TestBlockReaderLocal.java:842)
	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$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)

Issue Links

• is broken by: HDFS-13468 Add erasure coding metrics into ReadStatistics