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https://issues.apache.org/jira/browse/CURATOR-126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jordan Zimmerman updated CURATOR-126:
-------------------------------------

    Fix Version/s: 2.6.1

> IllegalStateException in performBackgroundOperation during close
> ----------------------------------------------------------------
>
>                 Key: CURATOR-126
>                 URL: https://issues.apache.org/jira/browse/CURATOR-126
>             Project: Apache Curator
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: 2.5.0
>            Reporter: Scott Blum
>            Assignee: Jordan Zimmerman
>             Fix For: 2.7.0
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> {code}
> [CuratorFramework-0] ERROR 
> org.apache.curator.framework.imps.CuratorFrameworkImpl  - Background 
> exception was not retry-able or retry gave up
> java.lang.IllegalStateException: Client is not started
>       at 
> com.google.common.base.Preconditions.checkState(Preconditions.java:176)
>       at 
> org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:113)
>       at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:807)
>       at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:793)
>       at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.access$400(CuratorFrameworkImpl.java:57)
>       at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:275)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at java.lang.Thread.run(Thread.java:744)
> {code}
> I see this sometimes during test runs; I believe this happens because 
> CuratorZookeeperClient.started gets set to false during shutdown, but the 
> backgroundOperation loop can still be running since shutting down the 
> backgroundOperation loop is inherently racy.



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