[infinispan-issues] [JBoss JIRA] Created: (ISPN-594) With deadlock detection enabled, occasional null pointer exceptions are experienced when using the lock() API

[Manik Surtani (JIRA)]

With deadlock detection enabled, occasional null pointer exceptions are experienced when using the lock() API
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                 Key: ISPN-594
                 URL: https://jira.jboss.org/browse/ISPN-594
             Project: Infinispan
          Issue Type: Bug
          Components: Locking and Concurrency
    Affects Versions: 4.1.0.CR2
         Environment: Deadlock detection + 
            Reporter: Manik Surtani
            Assignee: Manik Surtani
            Priority: Critical
             Fix For: 4.1.0.CR3


This has to do with the lock container.  The stack trace is as follows:

java.lang.NullPointerException
	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
	at org.infinispan.util.concurrent.locks.containers.OwnableReentrantPerEntryLockContainer.getLockFromMap(OwnableReentrantPerEntryLockContainer.java:38)
	at org.infinispan.util.concurrent.locks.containers.OwnableReentrantPerEntryLockContainer.ownsLock(OwnableReentrantPerEntryLockContainer.java:28)
	at org.infinispan.util.concurrent.locks.LockManagerImpl.ownsLock(LockManagerImpl.java:123)
	at org.infinispan.util.concurrent.locks.DeadlockDetectingLockManager.localVsLocalDld(DeadlockDetectingLockManager.java:94)
	at org.infinispan.util.concurrent.locks.DeadlockDetectingLockManager.lockAndRecord(DeadlockDetectingLockManager.java:78)
	at org.infinispan.container.EntryFactoryImpl.acquireLock(EntryFactoryImpl.java:205)
	at org.infinispan.container.EntryFactoryImpl.wrapEntryForWriting(EntryFactoryImpl.java:148)
	at org.infinispan.container.EntryFactoryImpl.wrapEntryForWriting(EntryFactoryImpl.java:106)
	at org.infinispan.interceptors.LockingInterceptor.visitLockControlCommand(LockingInterceptor.java:146)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:132)
	at org.infinispan.commands.AbstractVisitor.visitLockControlCommand(AbstractVisitor.java:147)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:132)
	at org.infinispan.commands.AbstractVisitor.visitLockControlCommand(AbstractVisitor.java:147)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
	at org.infinispan.interceptors.MarshalledValueInterceptor.visitLockControlCommand(MarshalledValueInterceptor.java:92)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
	at org.infinispan.interceptors.TxInterceptor.enlistReadAndInvokeNext(TxInterceptor.java:171)
	at org.infinispan.interceptors.TxInterceptor.visitLockControlCommand(TxInterceptor.java:115)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:58)
	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:39)
	at org.infinispan.commands.AbstractVisitor.visitLockControlCommand(AbstractVisitor.java:147)
	at org.infinispan.commands.control.LockControlCommand.acceptVisitor(LockControlCommand.java:136)
	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:271)
	at org.infinispan.CacheDelegate.lock(CacheDelegate.java:296)
	at org.infinispan.CacheDelegate.lock(CacheDelegate.java:289)
	at test.TestReplace.increase(TestReplace.java:112)
	at test.TestReplace.access$000(TestReplace.java:20)
	at test.TestReplace$XThread.run(TestReplace.java:95)

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