Submit Feedback
Legacy Knowledge Base
Published Sep. 10, 2025

Cluster instability

Written By

Sivakumar Perumal

How To articles are not official guidelines or officially supported documentation. They are community-contributed content and may not always reflect the latest updates to Liferay DXP. We welcome your feedback to improve How To articles!

While we make every effort to ensure this Knowledge Base is accurate, it may not always reflect the most recent updates or official guidelines.We appreciate your understanding and encourage you to reach out with any feedback or concerns.

Legacy Article

You are viewing an article from our legacy "FastTrack" publication program, made available for informational purposes. Articles in this program were published without a requirement for independent editing or verification and are provided"as is" without guarantee.

Before using any information from this article, independently verify its suitability for your situation and project.

Issue

  • Liferay clustering with jGroups has been bound to HTTP thread and can cause severe cluster instability 
    "ajp-nio-10.141.26.102-8009-exec-189" #12374 daemon prio=5 osprio=0 tid=0x00007f1d18097ac0 nid=0x2203c waiting on condition [0x00007f19ee037000] java.lang.Thread.State: TIMEDWAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for <0x000000038b2f10c8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
    at org.jgroups.util.CreditMap.decrement(CreditMap.java:157)
    at org.jgroups.protocols.MFC.handleDownMessage(MFC.java:104)
    at org.jgroups.protocols.FlowControl.down(FlowControl.java:341)
    at org.jgroups.protocols.FRAG2.down(FRAG2.java:147)
    at org.jgroups.protocols.pbcast.STATETRANSFER.down(STATETRANSFER.java:238)
    at org.jgroups.stack.ProtocolStack.down(ProtocolStack.java:1030)
    at org.jgroups.JChannel.down(JChannel.java:722)
    at org.jgroups.JChannel.send(JChannel.java:420)
    at org.jgroups.JChannel.send(JChannel.java:433)
    at com.liferay.portal.cluster.ClusterBase.sendJGroupsMessage(ClusterBase.java:97)
    at com.liferay.portal.cluster.ClusterLinkImpl.sendMulticastMessage(ClusterLinkImpl.java:109)
    at com.liferay.portal.kernel.cluster.ClusterLinkUtil.sendMulticastMessage(ClusterLinkUtil.java:80)
    at com.liferay.portal.kernel.cluster.messaging.ClusterBridgeMessageListener.doReceive(ClusterBridgeMessageListener.java:55)
    at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)
    at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72)
    at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:71)
    at com.liferay.portal.kernel.concurrent.CallerRunsPolicy.rejectedExecution(CallerRunsPolicy.java:46)
    at com.liferay.portal.kernel.search.AbstractSearchEngineConfigurator$1.rejectedExecution(AbstractSearchEngineConfigurator.java:236)
    at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:186)
    at com.liferay.portal.kernel.messaging.ParallelDestination.dispatch(ParallelDestination.java:88)
    at com.liferay.portal.kernel.messaging.BaseAsyncDestination.send(BaseAsyncDestination.java:177)
    at com.liferay.portal.kernel.messaging.DefaultMessageBus.sendMessage(DefaultMessageBus.java:179)
    at com.liferay.portal.kernel.messaging.sender.DefaultMessageSender.send(DefaultMessageSender.java:27)
    at com.liferay.portal.kernel.messaging.proxy.BaseMultiDestinationProxyBean.send(BaseMultiDestinationProxyBean.java:32)
    at com.liferay.portal.messaging.proxy.MultiDestinationMessagingProxyInvocationHandler.invoke(MultiDestinationMessagingProxyInvocationHandler.java:53)
    at com.sun.proxy.$Proxy309.updateDocument(Unknown Source)
    at com.liferay.portal.kernel.search.SearchEngineUtil.updateDocument(SearchEngineUtil.java:843)
    at com.liferay.portlet.usersadmin.util.UserIndexer.doReindex(UserIndexer.java:375)
    at com.liferay.portal.kernel.search.BaseIndexer.reindex(BaseIndexer.java:519)
    at sun.reflect.GeneratedMethodAccessor2687.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.liferay.portal.search.buffer.IndexerRequest.execute(IndexerRequest.java:90)
    at com.liferay.portal.search.buffer.IndexerRequestBufferUtil.executeIndexerRequest(IndexerRequestBufferUtil.java:102)
    at com.liferay.portal.search.buffer.IndexerRequestBufferUtil.execute(IndexerRequestBufferUtil.java:59)
    at com.liferay.portal.search.buffer.IndexerRequestBufferUtil.execute(IndexerRequestBufferUtil.java:115)
    at com.liferay.portal.search.buffer.IndexerRequestBufferTransactionLifecycleListener.committed(IndexerRequestBufferTransactionLifecycleListener.java:33)
    at com.liferay.portal.search.buffer.IndexerRequestBufferTransactionLifecycleListener$1.call(IndexerRequestBufferTransactionLifecycleListener.java:47)
    at com.liferay.portal.search.buffer.IndexerRequestBufferTransactionLifecycleListener$1.call(IndexerRequestBufferTransactionLifecycleListener.java:1)
    at com.liferay.portal.spring.transaction.BaseTransactionExecutor.invokeCallbacks(BaseTransactionExecutor.java:35)
    at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.processCommit(DefaultTransactionExecutor.java:126)
    at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:73)
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:51)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:111)
    at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:175)
    at com.sun.proxy.$Proxy118.updateUser(Unknown Source)
    ....

Environment

  • Liferay Portal 6.2
  • Liferay DXP 7.0-7.2

Resolution

Did this article resolve your issue ?
Legacy Knowledge Base
Did this article resolve your issue ?