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Posted to oak-issues@jackrabbit.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2015/09/24 09:19:04 UTC
[jira] [Created] (OAK-3442) Intermittent
IllegalMonitorStateException seen while releaseing IndexNode
Chetan Mehrotra created OAK-3442:
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Summary: Intermittent IllegalMonitorStateException seen while releaseing IndexNode
Key: OAK-3442
URL: https://issues.apache.org/jira/browse/OAK-3442
Project: Jackrabbit Oak
Issue Type: Bug
Components: lucene
Reporter: Chetan Mehrotra
Assignee: Chetan Mehrotra
Priority: Minor
Fix For: 1.3.8
At times following exception seen. On this system the index got corrupted because backing index files got deleted from the system and hence index is not accessible.
{noformat}
21.09.2015 09:26:36.764 *ERROR* [FelixStartLevel] com.adobe.granite.repository.impl.SlingRepositoryManager start: Uncaught Throwable trying to access Repository, calling stopRepository()
java.lang.IllegalMonitorStateException: attempt to unlock read lock, not locked by current thread
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.unmatchedUnlockException(ReentrantReadWriteLock.java:444)
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryReleaseShared(ReentrantReadWriteLock.java:428)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.unlock(ReentrantReadWriteLock.java:881)
at org.apache.jackrabbit.oak.plugins.index.lucene.IndexNode.release(IndexNode.java:121)
at org.apache.jackrabbit.oak.plugins.index.lucene.LucenePropertyIndex.getPlans(LucenePropertyIndex.java:212)
at org.apache.jackrabbit.oak.query.QueryImpl.getBestSelectorExecutionPlan(QueryImpl.java:847)
at org.apache.jackrabbit.oak.query.QueryImpl.getBestSelectorExecutionPlan(QueryImpl.java:793)
at org.apache.jackrabbit.oak.query.ast.SelectorImpl.prepare(SelectorImpl.java:283)
at org.apache.jackrabbit.oak.query.QueryImpl.prepare(QueryImpl.java:568)
at org.apache.jackrabbit.oak.query.QueryEngineImpl.executeQuery(QueryEngineImpl.java:183)
at org.apache.jackrabbit.oak.security.user.UserProvider.getAuthorizableByPrincipal(UserProvider.java:234)
at org.apache.jackrabbit.oak.security.user.UserManagerImpl.getAuthorizable(UserManagerImpl.java:116)
at org.apache.jackrabbit.oak.security.principal.PrincipalProviderImpl.getAuthorizable(PrincipalProviderImpl.java:140)
at org.apache.jackrabbit.oak.security.principal.PrincipalProviderImpl.getPrincipal(PrincipalProviderImpl.java:69)
at org.apache.jackrabbit.oak.spi.security.principal.CompositePrincipalProvider.getPrincipal(CompositePrincipalProvider.java:50)
at org.apache.jackrabbit.oak.spi.security.principal.PrincipalManagerImpl.getPrincipal(PrincipalManagerImpl.java:47)
at com.adobe.granite.repository.impl.SlingRepositoryManager.setupPermissions(SlingRepositoryManager.java:997)
at com.adobe.granite.repository.impl.SlingRepositoryManager.createRepository(SlingRepositoryManager.java:420)
at com.adobe.granite.repository.impl.SlingRepositoryManager.acquireRepository(SlingRepositoryManager.java:290)
at org.apache.sling.jcr.base.AbstractSlingRepositoryManager.start(AbstractSlingRepositoryManager.java:304)
at com.adobe.granite.repository.impl.SlingRepositoryManager.activate(SlingRepositoryManager.java:267)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222)
at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37)
at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615)
at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499)
at org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:295)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:302)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:832)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:799)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:724)
at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:927)
at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:891)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1492)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1413)
at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:1222)
at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:1158)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1444)
at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:987)
at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:838)
at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:545)
at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4547)
at org.apache.felix.framework.Felix.registerService(Felix.java:3521)
at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:348)
at org.apache.sling.commons.threads.impl.Activator.start(Activator.java:55)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2223)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2141)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1368)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
at java.lang.Thread.run(Thread.java:745)
{noformat}
Above exception happens at
{code}
for (String path : indexPaths) {
try {
indexNode = tracker.acquireIndexNode(path);
if (indexNode != null) {
IndexPlan plan = new IndexPlanner(indexNode, path, filter, sortOrder).getPlan();
if (plan != null) {
plans.add(plan);
}
}
} finally {
if (indexNode != null) {
indexNode.release();
}
}
}
{code}
It has been ensured that if indexNode is initialized then it has been acquired. So only way for such an exception to happen is that in a loop of say 2 paths {{indexNode}} got initialized for Loop 1 and then while acquiring in Loop 2 the indexNode still refers to old released value and that would cause the exception. The fix should be simply to null the variable once released
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