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https://issues.apache.org/jira/browse/KAFKA-8861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16921324#comment-16921324
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ASF GitHub Bot commented on KAFKA-8861:
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chia7712 commented on pull request #7281: KAFKA-8861 Fix flaky
RegexSourceIntegrationTest.testMultipleConsumers…
URL: https://github.com/apache/kafka/pull/7281
similar to https://issues.apache.org/jira/browse/KAFKA-8011 and
https://issues.apache.org/jira/browse/KAFKA-8026
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Fix flaky
> RegexSourceIntegrationTest.testMultipleConsumersCanReadFromPartitionedTopic
> -------------------------------------------------------------------------------------
>
> Key: KAFKA-8861
> URL: https://issues.apache.org/jira/browse/KAFKA-8861
> Project: Kafka
> Issue Type: Bug
> Components: streams, unit tests
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Minor
> Labels: flaky-test
>
> This is similar to KAFKA-8011 and KAFKA-8026. The error stack is shown below.
> {code:java}
> java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
> at java.util.ArrayList$Itr.next(ArrayList.java:859)
> at java.util.AbstractList.equals(AbstractList.java:521)
> at
> org.apache.kafka.streams.integration.RegexSourceIntegrationTest.lambda$testMultipleConsumersCanReadFromPartitionedTopic$5(RegexSourceIntegrationTest.java:351)
> at
> org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:366)
> at
> org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:336)
> at
> org.apache.kafka.streams.integration.RegexSourceIntegrationTest.testMultipleConsumersCanReadFromPartitionedTopic(RegexSourceIntegrationTest.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: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:305)
> at
> org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:365)
> 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:330)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:78)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:328)
> {code}
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