EJBCLIENT000509: Unexpected exception processing EJB request: NPE during server graceful shutdown ------------------------------------------------------------------------------------------------- Key: WFLY-9923 URL: https://issues.jboss.org/browse/WFLY-9923 Project: WildFly Issue Type: Bug Components: Clustering, EJB Affects Versions: 12.0.0.Beta1 Reporter: Richard Janík Assignee: David Lloyd Seen in our clustering failover tests for remote stateful EJBs. Setup: 4 node cluster, one node at the time is shut down gracefully, while 2000 standalone clients keep calling the application. During the graceful shutdown, 2 servers logged this error message right after stopping the deployment: {noformat} [JBossINF] 05:27:23,973 WARN [org.infinispan.transaction.impl.TransactionTable] (ServerService Thread Pool -- 81) ISPN000100: Stopping, but there are 0 local transactions and 28 remote transactions that did not finish in time. [JBossINF] 05:27:23,974 INFO [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 81) WFLYCLINF0003: Stopped clusterbench-ee7.ear/clusterbench-ee7-ejb.jar cache from ejb container [JBossINF] 05:27:23,989 ERROR [org.jboss.ejb.client.invocation] (default task-88) EJBCLIENT000509: Unexpected exception processing EJB request: java.lang.NullPointerException [JBossINF] at org.jboss.as.ejb3.deployment.DeploymentRepository.getStartedModules(DeploymentRepository.java:202) [JBossINF] at org.jboss.as.ejb3.remote.AssociationImpl.findEJB(AssociationImpl.java:400) [JBossINF] at org.jboss.as.ejb3.remote.AssociationImpl.receiveInvocationRequest(AssociationImpl.java:116) [JBossINF] at org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleInvocationRequest(EJBServerChannel.java:450) [JBossINF] at org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleMessage(EJBServerChannel.java:188) [JBossINF] at org.jboss.remoting3.remote.RemoteConnectionChannel.lambda$receiveMessage$2(RemoteConnectionChannel.java:361) [JBossINF] at org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:926) [JBossINF] at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1979) [JBossINF] at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1481) [JBossINF] at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1374) [JBossINF] at java.lang.Thread.run(Thread.java:748) {noformat} Server log: [ejbremote-shutdown-dist-sync-server1|https://jenkins.hosts.mwqe.eng.bos.r...] [ejbremote-shutdown-dist-sync-server4|https://jenkins.hosts.mwqe.eng.bos.r...]