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https://issues.apache.org/jira/browse/KAFKA-8121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajini Sivaram resolved KAFKA-8121.
-----------------------------------
Resolution: Fixed
Reviewer: Ismael Juma
Fix Version/s: 2.2.1
2.3.0
> ZooKeeperClient session expiry thread may leave clients behind after close
> --------------------------------------------------------------------------
>
> Key: KAFKA-8121
> URL: https://issues.apache.org/jira/browse/KAFKA-8121
> Project: Kafka
> Issue Type: Bug
> Reporter: Rajini Sivaram
> Assignee: Rajini Sivaram
> Priority: Major
> Fix For: 2.3.0, 2.2.1
>
>
> Test failure after merging KAFKA-8118:
> {code:java}
> java.lang.AssertionError: Found unexpected threads during @AfterClass,
> allThreads=Set(/127.0.0.1:51186 to /127.0.0.1:40791 workers Thread 3,
> metrics-meter-tick-thread-2, main, Signal Dispatcher, Reference Handler,
> zk-session-expiry-handler0-SendThread(localhost:35825),
> zk-session-expiry-handler0-EventThread, scala-execution-context-global-1903,
> Test worker, scala-execution-context-global-34,
> scala-execution-context-global-5352, scala-execution-context-global-234,
> Finalizer, scala-execution-context-global-235, /127.0.0.1:51186 to
> /127.0.0.1:40791 workers Thread 2, metrics-meter-tick-thread-1),
> unexpected=Set(zk-session-expiry-handler0-EventThread)
> at org.junit.Assert.fail(Assert.java:89)
> at org.junit.Assert.assertTrue(Assert.java:42)
> at
> kafka.zk.ZooKeeperTestHarness$.verifyNoUnexpectedThreads(ZooKeeperTestHarness.scala:129)
> at
> kafka.zk.ZooKeeperTestHarness$.tearDownClass(ZooKeeperTestHarness.scala:114)
> at
> kafka.zk.ZooKeeperTestHarness.tearDownClass(ZooKeeperTestHarness.scala){code}
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