Corey J. Nolet created CURATOR-121:
--------------------------------------
Summary: PathChildrenCache is throwing an InterruptedException
when being closed
Key: CURATOR-121
URL: https://issues.apache.org/jira/browse/CURATOR-121
Project: Apache Curator
Issue Type: Bug
Components: Recipes
Affects Versions: 2.6.0, 2.5.0
Reporter: Corey J. Nolet
Priority: Critical
I have a server which is using the PathChildrenCache with the LeaderSelector so
that I can keep track of changes in leadership for a particular znode. Upon
closing the PathChildrenCache, I intermittently receive an InterruptedException
like the following:
{code}
java.lang.InterruptedException
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1038)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:282)
at
org.apache.curator.CuratorZookeeperClient.internalBlockUntilConnectedOrTimedOut(CuratorZookeeperClient.java:324)
at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:105)
at org.apache.curator.utils.EnsurePath$InitialHelper.ensure(EnsurePath.java:140)
at org.apache.curator.utils.EnsurePath.ensure(EnsurePath.java:99)
at
org.apache.curator.framework.recipes.cache.PathChildrenCache.refresh(PathChildrenCache.java:481)
at
org.apache.curator.framework.recipes.cache.RefreshOperation.invoke(RefreshOperation.java:35)
at
org.apache.curator.framework.recipes.cache.PathChildrenCache$10.run(PathChildrenCache.java:762)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
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)
{code}
It doesn't happen all the time but it does happen about 2-3 times in a test
suite that's creating and stopping the server about 60 times total.
Jordan Zimmerman mentioned on the mailing list that this may be a bug in the
framework.
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