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https://issues.apache.org/jira/browse/GEODE-5915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kirk Lund reassigned GEODE-5915:
--------------------------------
Assignee: Kirk Lund
> ManagementListener.handleEvent logs a warning anytime a system Alert occurs
> ---------------------------------------------------------------------------
>
> Key: GEODE-5915
> URL: https://issues.apache.org/jira/browse/GEODE-5915
> Project: Geode
> Issue Type: Test
> Components: management
> Reporter: Kirk Lund
> Assignee: Kirk Lund
> Priority: Minor
>
> The IllegalMonitorStateException is being thrown because the read lock is
> acquired only if the ResourceEvent type is not SYSTEM_ALERT, but the code
> tries to unlock it unconditionally:
> Lock:
> {noformat}
> if (event == ResourceEvent.CACHE_CREATE || event ==
> ResourceEvent.CACHE_REMOVE) {
> readWriteLock.writeLock().lock();
> } else if (event != ResourceEvent.SYSTEM_ALERT) {
> readWriteLock.readLock().lock();
> }
> {noformat}
> Unlock:
> {noformat}
> if (event == ResourceEvent.CACHE_CREATE || event ==
> ResourceEvent.CACHE_REMOVE) {
> readWriteLock.writeLock().unlock();
> } else {
> readWriteLock.readLock().unlock();
> }
> {noformat}
> {noformat}
> [vm0] [warn 2018/10/23 12:51:35.339 PDT <Pooled Message Processor 2>
> tid=0x58] attempt to unlock read lock, not locked by current thread
> [vm0] java.lang.IllegalMonitorStateException: attempt to unlock read lock,
> not locked by current thread
> [vm0] at
> java.util.concurrent.locks.ReentrantReadWriteLock$Sync.unmatchedUnlockException(ReentrantReadWriteLock.java:444)
> [vm0] at
> java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryReleaseShared(ReentrantReadWriteLock.java:428)
> [vm0] at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341)
> [vm0] at
> java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.unlock(ReentrantReadWriteLock.java:881)
> [vm0] at
> org.apache.geode.management.internal.beans.ManagementListener.handleEvent(ManagementListener.java:232)
> [vm0] at
> org.apache.geode.distributed.internal.InternalDistributedSystem.notifyResourceEventListeners(InternalDistributedSystem.java:2219)
> [vm0] at
> org.apache.geode.distributed.internal.InternalDistributedSystem.handleResourceEvent(InternalDistributedSystem.java:595)
> [vm0] at
> org.apache.geode.internal.admin.remote.AlertListenerMessage.process(AlertListenerMessage.java:106)
> [vm0] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:367)
> [vm0] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:432)
> [vm0] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> [vm0] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [vm0] at
> org.apache.geode.distributed.internal.ClusterDistributionManager.runUntilShutdown(ClusterDistributionManager.java:954)
> [vm0] at
> org.apache.geode.distributed.internal.ClusterDistributionManager.doProcessingThread(ClusterDistributionManager.java:820)
> [vm0] at
> org.apache.geode.internal.logging.LoggingThreadFactory.lambda$newThread$0(LoggingThreadFactory.java:121)
> [vm0] at java.lang.Thread.run(Thread.java:748)
> {noformat}
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