Toshihiko Uchida created HDFS-15308:
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Summary: TestReconstructStripedFile.testNNSendsErasureCodingTasks
is flaky
Key: HDFS-15308
URL: https://issues.apache.org/jira/browse/HDFS-15308
Project: Hadoop HDFS
Issue Type: Bug
Components: erasure-coding
Affects Versions: 3.3.0
Reporter: Toshihiko Uchida
In HDFS-14353, TestReconstructStripedFile.testNNSendsErasureCodingTasks failed
once due to pending reconstruction timeout as follows.
{code}
java.lang.AssertionError: Found 4 timeout pending reconstruction tasks
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at
org.apache.hadoop.hdfs.TestReconstructStripedFile.testNNSendsErasureCodingTasks(TestReconstructStripedFile.java:502)
at
org.apache.hadoop.hdfs.TestReconstructStripedFile.testNNSendsErasureCodingTasks(TestReconstructStripedFile.java:458)
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)
{code}
The error occurred on the following assertion.
{code}
// Make sure that all pending reconstruction tasks can be processed.
while (ns.getPendingReconstructionBlocks() > 0) {
long timeoutPending = ns.getNumTimedOutPendingReconstructions();
assertTrue(String.format("Found %d timeout pending reconstruction tasks",
timeoutPending), timeoutPending == 0);
Thread.sleep(1000);
}
{code}
The failure could not be reproduced in the reporter's docker environment
(start-build-environment.sh).
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