Bob Barrett created KAFKA-9750:
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             Summary: 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


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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