See [1]. We encountered the following error in a C4 product cluster setup. We frequently came across similar infinispan/JGroup errors in 3.2.X releases but this is the first one in C4 testing cycle.
[1]https://wso2.org/jira/browse/CARBON-13113 ERROR {org.infinispan.interceptors.InvocationContextInterceptor} - ISPN000136: Execution error org.infinispan.util.concurrent.TimeoutException: Unable to acquire lock after [10 seconds] on key [ org.wso2.carbon.caching.core.permissiontree.PermissionTreeCacheKey@0] for requestor [Thread[OOB-19,localhost-53051,5,Thread Pools]]! Lock held by [(another thread)] at org.infinispan.util.concurrent.locks.LockManagerImpl.lock(LockManagerImpl.java:206) at org.infinispan.util.concurrent.locks.LockManagerImpl.acquireLockNoCheck(LockManagerImpl.java:189) at org.infinispan.interceptors.locking.AbstractLockingInterceptor.lockKey(AbstractLockingInterceptor.java:114) at org.infinispan.interceptors.locking.NonTransactionalLockingInterceptor.visitPutKeyValueCommand(NonTransactionalLockingInterceptor.java:67) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:130) at org.infinispan.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:61) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.StateTransferLockInterceptor.handleWithRetries(StateTransferLockInterceptor.java:207) at org.infinispan.interceptors.StateTransferLockInterceptor.handleWriteCommand(StateTransferLockInterceptor.java:180) at org.infinispan.interceptors.StateTransferLockInterceptor.visitPutKeyValueCommand(StateTransferLockInterceptor.java:151) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:130) at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:89) at org.infinispan.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:61) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:345) at org.infinispan.commands.remote.BaseRpcInvokingCommand.processVisitableCommand(BaseRpcInvokingCommand.java:61) at org.infinispan.commands.remote.SingleRpcCommand.perform(SingleRpcCommand.java:66) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:127) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithWaitForBlocks(InboundInvocationHandlerImpl.java:136) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithRetry(InboundInvocationHandlerImpl.java:162) at org.infinispan.remoting.InboundInvocationHandlerImpl.handle(InboundInvocationHandlerImpl.java:114) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.executeCommand(CommandAwareRpcDispatcher.java:217) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:197) at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:456) at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:363) at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:238) at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:543) at org.jgroups.JChannel.up(JChannel.java:716) at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1026) at org.jgroups.protocols.FRAG2.up(FRAG2.java:181) at org.jgroups.protocols.FlowControl.up(FlowControl.java:400) at org.jgroups.protocols.FlowControl.up(FlowControl.java:418) at org.jgroups.protocols.pbcast.GMS.up(GMS.java:881) at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:244) at org.jgroups.protocols.UNICAST.up(UNICAST.java:332) at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:697) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:559) at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:167) at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:282) at org.jgroups.protocols.MERGE2.up(MERGE2.java:205) at org.jgroups.protocols.Discovery.up(Discovery.java:355) at org.jgroups.protocols.TP.passMessageUp(TP.java:1174) at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1722) at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1704) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) [2012-05-16 02:43:10,000] ERROR {org.infinispan.interceptors.InvocationContextInterceptor} - ISPN000136: Execution error org.infinispan.util.concurrent.TimeoutException: Unable to acquire lock after [10 seconds] on key [ org.wso2.carbon.caching.core.permissiontree.PermissionTreeCacheKey@0] for requestor [Thread[OOB-14,localhost-24131,5,Thread Pools]]! Lock held by [(another thread)] at org.infinispan.util.concurrent.locks.LockManagerImpl.lock(LockManagerImpl.java:206) at org.infinispan.util.concurrent.locks.LockManagerImpl.acquireLockNoCheck(LockManagerImpl.java:189) at org.infinispan.interceptors.locking.AbstractLockingInterceptor.lockKey(AbstractLockingInterceptor.java:114) at org.infinispan.interceptors.locking.NonTransactionalLockingInterceptor.visitPutKeyValueCommand(NonTransactionalLockingInterceptor.java:67) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:130) at org.infinispan.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:61) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.StateTransferLockInterceptor.handleWithRetries(StateTransferLockInterceptor.java:207) at org.infinispan.interceptors.StateTransferLockInterceptor.handleWriteCommand(StateTransferLockInterceptor.java:180) at org.infinispan.interceptors.StateTransferLockInterceptor.visitPutKeyValueCommand(StateTransferLockInterceptor.java:151) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116) at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:130) at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:89) at org.infinispan.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:61) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:76) at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:345) at org.infinispan.commands.remote.BaseRpcInvokingCommand.processVisitableCommand(BaseRpcInvokingCommand.java:61) at org.infinispan.commands.remote.SingleRpcCommand.perform(SingleRpcCommand.java:66) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:127) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithWaitForBlocks(InboundInvocationHandlerImpl.java:136) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithRetry(InboundInvocationHandlerImpl.java:162) at org.infinispan.remoting.InboundInvocationHandlerImpl.handle(InboundInvocationHandlerImpl.java:114) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.executeCommand(CommandAwareRpcDispatcher.java:217) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:197) at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:456) at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:363) at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:238) at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:543) at org.jgroups.JChannel.up(JChannel.java:716) at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1026) at org.jgroups.protocols.FRAG2.up(FRAG2.java:181) at org.jgroups.protocols.FlowControl.up(FlowControl.java:400) at org.jgroups.protocols.FlowControl.up(FlowControl.java:418) at org.jgroups.protocols.pbcast.GMS.up(GMS.java:881) at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:244) at org.jgroups.protocols.UNICAST.up(UNICAST.java:332) at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:697) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:559) at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:167) at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:282) at org.jgroups.protocols.MERGE2.up(MERGE2.java:205) at org.jgroups.protocols.Discovery.up(Discovery.java:355) at org.jgroups.protocols.TP.passMessageUp(TP.java:1174) at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1722) at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1704) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722)
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