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https://issues.apache.org/jira/browse/KAFKA-9750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17067839#comment-17067839
 ] 

Jason Gustafson commented on KAFKA-9750:
----------------------------------------

Elevating this to blocker until we understand the cause. This especially is 
troubling:
{code}
[2020-03-24 17:39:19,377] ERROR [ReplicaAlterLogDirsThread-0]: Error due to 
(kafka.server.ReplicaAlterLogDirsThread:76)
org.apache.kafka.common.errors.ReplicaNotAvailableException: Future log for 
partition test-topic-0 is not available on broker 0
{code}

> Flaky test kafka.server.ReplicaManagerTest.testFencedErrorCausedByBecomeLeader
> ------------------------------------------------------------------------------
>
>                 Key: KAFKA-9750
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9750
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>            Reporter: Bob Barrett
>            Assignee: Chia-Ping Tsai
>            Priority: Major
>              Labels: flaky-test
>
> When running tests locally, I've seen that 1-2% of the time, 
> testFencedErrorCausedByBecomeLeader fails with
> {code:java}
> org.scalatest.exceptions.TestFailedException: the partition=test-topic-0 
> should be removed from pending 
> stateorg.scalatest.exceptions.TestFailedException: the partition=test-topic-0 
> should be removed from pending state
>  at 
> org.scalatest.Assertions.newAssertionFailedException(Assertions.scala:530) at 
> org.scalatest.Assertions.newAssertionFailedException$(Assertions.scala:529) 
> at 
> org.scalatest.Assertions$.newAssertionFailedException(Assertions.scala:1389) 
> at org.scalatest.Assertions.fail(Assertions.scala:1091) at 
> org.scalatest.Assertions.fail$(Assertions.scala:1087) at 
> org.scalatest.Assertions$.fail(Assertions.scala:1389) at 
> kafka.server.ReplicaManagerTest.testFencedErrorCausedByBecomeLeader(ReplicaManagerTest.scala:248)
>  at jdk.internal.reflect.GeneratedMethodAccessor25.invoke(Unknown Source) at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.base/java.lang.reflect.Method.invoke(Method.java:566) at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
>  at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>  at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
>  at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>  at 
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
> at 
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
> at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at 
> org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
>  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
>  at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
>  at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at 
> org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at 
> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at 
> org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at 
> org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at 
> org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at 
> org.junit.runners.ParentRunner.run(ParentRunner.java:413) at 
> org.junit.runner.JUnitCore.run(JUnitCore.java:137) at 
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
>  at 
> com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:40)
>  at 
> com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
>  at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58) {code}



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