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https://issues.apache.org/jira/browse/TEZ-4364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17467880#comment-17467880
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László Bodor commented on TEZ-4364:
-----------------------------------
merged to master, thanks a lot [~rbalamohan] for the review!
> TestFaultTolerance timeout on master - TestInput fix after TEZ-4338
> -------------------------------------------------------------------
>
> Key: TEZ-4364
> URL: https://issues.apache.org/jira/browse/TEZ-4364
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.10.2
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Fix For: 0.10.2
>
> Attachments: surefire_jstack.log,
> syslog_attempt_1640554229092_0001_1_01_000002_0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> TLDR: after TEZ-4388, setDestinationLocalhostName hit NPE as an
> InputReadErrorEvent was created with null destinationLocalHostName. This is
> unlikely in prod, we don't use the InputReadErrorEvent.create(...) with 3
> parameters.
> TestFaultTolerance test becomes flakier recently. It's important to be
> investigated because a unit test failure could also imply a product bug while
> handling failure scenarios.
> According to surefire process' jstack, it can be reproduced only by
> TestFaultTolerance.testBasicInputFailureWithoutExitDeadline
> [^surefire_jstack.log]
> {code}
> "Thread-1355" #1569 prio=5 os_prio=31 tid=0x00007fe76660c800 nid=0x43d07
> waiting on condition [0x000070002ab38000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.tez.test.TestFaultTolerance.runDAGAndVerify(TestFaultTolerance.java:155)
> at
> org.apache.tez.test.TestFaultTolerance.runDAGAndVerify(TestFaultTolerance.java:142)
> at
> org.apache.tez.test.TestFaultTolerance.runDAGAndVerify(TestFaultTolerance.java:138)
> at
> org.apache.tez.test.TestFaultTolerance.testBasicInputFailureWithoutExitDeadline(TestFaultTolerance.java:351)
> 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)
> {code}
> this is when it waits for the DAG to finish
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