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https://issues.apache.org/jira/browse/SPARK-11887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-11887:
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Assignee: Apache Spark (was: Josh Rosen)
> Close PersistenceEngine at end of tests
> ---------------------------------------
>
> Key: SPARK-11887
> URL: https://issues.apache.org/jira/browse/SPARK-11887
> Project: Spark
> Issue Type: Bug
> Components: Tests
> Reporter: Josh Rosen
> Assignee: Apache Spark
>
> In PersistenceEngineSuite, we do not call {{close()}} on the
> PersistenceEngine at the end of the test. For the ZooKeeperPersistenceEngine,
> this causes us to leak a ZooKeeperClient, causing the test logs to be spammed
> with connection error messages from that client:
> {code}
> 15/11/20 05:13:35.789
> pool-1-thread-1-ScalaTest-running-PersistenceEngineSuite-SendThread(localhost:15741)
> INFO ClientCnxn: Opening socket connection to server
> localhost/127.0.0.1:15741. Will not attempt to authenticate using SASL
> (unknown error)
> 15/11/20 05:13:35.790
> pool-1-thread-1-ScalaTest-running-PersistenceEngineSuite-SendThread(localhost:15741)
> WARN ClientCnxn: Session 0x15124ff48dd0000 for server null, unexpected
> error, closing socket connection and attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
> at
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
> {code}
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