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Posted to dev@curator.apache.org by "Jordan Zimmerman (JIRA)" <ji...@apache.org> on 2014/04/12 22:56:14 UTC

[jira] [Assigned] (CURATOR-103) NPE in PathChildrenCache

     [ https://issues.apache.org/jira/browse/CURATOR-103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jordan Zimmerman reassigned CURATOR-103:
----------------------------------------

    Assignee: Jordan Zimmerman

> NPE in PathChildrenCache
> ------------------------
>
>                 Key: CURATOR-103
>                 URL: https://issues.apache.org/jira/browse/CURATOR-103
>             Project: Apache Curator
>          Issue Type: Bug
>          Components: Recipes
>    Affects Versions: 2.4.0
>            Reporter: Jay Bae
>            Assignee: Jordan Zimmerman
>             Fix For: 2.4.2
>
>
> On ConnectionLoss, PathChildrenCache cannot recover the connection with the following NPE
> ERROR 2014-04-09 17:48:15,231 [DaemonThreadFactory-2-thread-2] org.apache.curator.framework.imps.CuratorFrameworkImpl: Background retry gave up
> org.apache.curator.CuratorConnectionLossException: KeeperErrorCode = ConnectionLoss
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:766)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:749)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:56)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl$3.call(CuratorFrameworkImpl.java:244)
>         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:166)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> INFO  2014-04-09 17:48:15,276 [ServerInventoryView-0-EventThread] org.apache.curator.framework.state.ConnectionStateManager: State change: RECONNECTED
> INFO  2014-04-09 17:48:15,382 [ServerInventoryView-0-EventThread] org.apache.curator.framework.state.ConnectionStateManager: State change: SUSPENDED
> ERROR 2014-04-09 17:48:15,748 [DaemonThreadFactory-2-thread-2] org.apache.curator.framework.imps.CuratorFrameworkImpl: Background exception was not retry-able or retry gave up
> java.lang.NullPointerException
>         at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191)
>         at com.google.common.collect.Lists$TransformingSequentialList.<init>(Lists.java:527)
>         at com.google.common.collect.Lists.transform(Lists.java:510)
>         at org.apache.curator.framework.recipes.cache.PathChildrenCache.processChildren(PathChildrenCache.java:635)
>         at org.apache.curator.framework.recipes.cache.PathChildrenCache.access$200(PathChildrenCache.java:68)
>         at org.apache.curator.framework.recipes.cache.PathChildrenCache$4.processResult(PathChildrenCache.java:476)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:686)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:659)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:783)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:749)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:56)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl$3.call(CuratorFrameworkImpl.java:244)
>         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:166)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)



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