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https://issues.apache.org/jira/browse/KAFKA-7988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17529449#comment-17529449
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lqjacklee commented on KAFKA-7988:
----------------------------------
why exist the same thread name ?
{code:java}
Invalid threads: expected 6, got 5: List(ReplicaFetcherThread-0-0,
ReplicaFetcherThread-0-1, ReplicaFetcherThread-0-0, ReplicaFetcherThread-0-2,
ReplicaFetcherThread-0-1
{code}
[~mjsax] for the same thread name issue, I plan to add the monitor which listen
the thread creation. but lack of the api to support it.
I want to check whether the user take the wrong usage ?
> Flaky Test DynamicBrokerReconfigurationTest#testThreadPoolResize
> ----------------------------------------------------------------
>
> Key: KAFKA-7988
> URL: https://issues.apache.org/jira/browse/KAFKA-7988
> Project: Kafka
> Issue Type: Bug
> Components: core, unit tests
> Affects Versions: 2.2.0, 2.3.0
> Reporter: Matthias J. Sax
> Assignee: Rajini Sivaram
> Priority: Critical
> Labels: flaky-test
>
> To get stable nightly builds for `2.2` release, I create tickets for all
> observed test failures.
> [https://builds.apache.org/blue/organizations/jenkins/kafka-2.2-jdk8/detail/kafka-2.2-jdk8/30/]
> {quote}kafka.server.DynamicBrokerReconfigurationTest > testThreadPoolResize
> FAILED java.lang.AssertionError: Invalid threads: expected 6, got 5:
> List(ReplicaFetcherThread-0-0, ReplicaFetcherThread-0-1,
> ReplicaFetcherThread-0-0, ReplicaFetcherThread-0-2, ReplicaFetcherThread-0-1)
> at org.junit.Assert.fail(Assert.java:88) at
> org.junit.Assert.assertTrue(Assert.java:41) at
> kafka.server.DynamicBrokerReconfigurationTest.verifyThreads(DynamicBrokerReconfigurationTest.scala:1260)
> at
> kafka.server.DynamicBrokerReconfigurationTest.maybeVerifyThreadPoolSize$1(DynamicBrokerReconfigurationTest.scala:531)
> at
> kafka.server.DynamicBrokerReconfigurationTest.resizeThreadPool$1(DynamicBrokerReconfigurationTest.scala:550)
> at
> kafka.server.DynamicBrokerReconfigurationTest.reducePoolSize$1(DynamicBrokerReconfigurationTest.scala:536)
> at
> kafka.server.DynamicBrokerReconfigurationTest.$anonfun$testThreadPoolResize$3(DynamicBrokerReconfigurationTest.scala:559)
> at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:158) at
> kafka.server.DynamicBrokerReconfigurationTest.verifyThreadPoolResize$1(DynamicBrokerReconfigurationTest.scala:558)
> at
> kafka.server.DynamicBrokerReconfigurationTest.testThreadPoolResize(DynamicBrokerReconfigurationTest.scala:572){quote}
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