chevaris commented on issue #1253:
URL: https://github.com/apache/curator/issues/1253#issuecomment-2714853196
I took a thread dump to check where the thread is stack when
CuratorFrameworkImpl.close() -> EnsembleTracker.close() -> Watchers removal...
is invoked in this specific case (ZK server down). Basically the close() is
blocked waiting that watches removal is done in foreground, BUT this can NOT
happen because the ZK server is down.
In 5.7.1 this was really much faster, so I assume this was maybe done in
background or in a different manner.
I have seen that there has been some relevant changes in WatcherRemoval
classes. Could you help me to debug this problem?
"main" #1 prio=5 os_prio=0 cpu=703,45ms elapsed=11,04s
tid=0x00007f1144019dd0 nid=0x229807 waiting on condition [0x00007f1149dfb000]
java.lang.Thread.State: TIMED_WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@17.0.14/Native Method)
- parking to wait for <0x00000005b4258b38> (a
java.util.concurrent.CountDownLatch$Sync)
at
java.util.concurrent.locks.LockSupport.parkNanos(java.base@17.0.14/LockSupport.java:252)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(java.base@17.0.14/AbstractQueuedSynchronizer.java:717)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(java.base@17.0.14/AbstractQueuedSynchronizer.java:1074)
at
java.util.concurrent.CountDownLatch.await(java.base@17.0.14/CountDownLatch.java:276)
at
org.apache.curator.CuratorZookeeperClient.internalBlockUntilConnectedOrTimedOut(CuratorZookeeperClient.java:417)
at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:80)
at
org.apache.curator.framework.imps.RemoveWatchesBuilderImpl.pathInForeground(RemoveWatchesBuilderImpl.java:232)
at
org.apache.curator.framework.imps.RemoveWatchesBuilderImpl.internalRemoval(RemoveWatchesBuilderImpl.java:86)
at
org.apache.curator.framework.imps.WatcherRemovalManager.removeWatchers(WatcherRemovalManager.java:59)
at
org.apache.curator.framework.imps.WatcherRemovalFacade.removeWatchers(WatcherRemovalFacade.java:54)
at
org.apache.curator.framework.imps.EnsembleTracker.close(EnsembleTracker.java:101)
at
org.apache.curator.framework.imps.CuratorFrameworkImpl.close(CuratorFrameworkImpl.java:382)
at
com.cheva.grantor.CuratorCloseSlow.tesCuratorCloseSlow(CuratorCloseSlow.java:28)
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