NPE during server shutdown when using scattered cache ----------------------------------------------------- Key: WFLY-10389 URL: https://issues.jboss.org/browse/WFLY-10389 Project: WildFly Issue Type: Bug Components: Clustering Affects Versions: 13.0.0.Beta1 Reporter: Michal Vinkler Assignee: Paul Ferraro Fix For: 15.0.0.Alpha1 We hit NPE when running tests for RFE EAP7-867. EAP distribution was built from https://github.com/pferraro/wildfly/tree/scattered . Test description: Positive stress test (no failover), 4-node EAP cluster, clients: starting with 400 clients in the beginning, raising the number of clients to 6000 in the end of the test. During clean server shutdown in the end of the test, server logged NPE and got stuck: {code} [JBossINF] [0m[31m07:55:57,643 ERROR [org.infinispan.scattered.impl.ScatteredStateConsumerImpl] (thread-200,ejb,dev214) ISPN000471: Failed processing values received from remote node during rebalance.: java.lang.NullPointerException [JBossINF] at org.infinispan.scattered.impl.ScatteredStateConsumerImpl.applyValues(ScatteredStateConsumerImpl.java:505) [JBossINF] at org.infinispan.scattered.impl.ScatteredStateConsumerImpl.lambda$getValuesAndApply$8(ScatteredStateConsumerImpl.java:475) [JBossINF] at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) [JBossINF] at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) [JBossINF] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) [JBossINF] at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) [JBossINF] at org.infinispan.remoting.transport.AbstractRequest.complete(AbstractRequest.java:66) [JBossINF] at org.infinispan.remoting.transport.impl.SingleTargetRequest.receiveResponse(SingleTargetRequest.java:56) [JBossINF] at org.infinispan.remoting.transport.impl.SingleTargetRequest.onResponse(SingleTargetRequest.java:35) [JBossINF] at org.infinispan.remoting.transport.impl.RequestRepository.addResponse(RequestRepository.java:53) [JBossINF] at org.infinispan.remoting.transport.jgroups.JGroupsTransport.processResponse(JGroupsTransport.java:1304) [JBossINF] at org.infinispan.remoting.transport.jgroups.JGroupsTransport.processMessage(JGroupsTransport.java:1207) [JBossINF] at org.infinispan.remoting.transport.jgroups.JGroupsTransport.access$200(JGroupsTransport.java:123) [JBossINF] at org.infinispan.remoting.transport.jgroups.JGroupsTransport$ChannelCallbacks.receive(JGroupsTransport.java:1342) [JBossINF] at org.jgroups.JChannel.up(JChannel.java:819) [JBossINF] at org.jgroups.fork.ForkProtocolStack.up(ForkProtocolStack.java:134) [JBossINF] at org.jgroups.stack.Protocol.up(Protocol.java:340) [JBossINF] at org.jgroups.protocols.FORK.up(FORK.java:134) [JBossINF] at org.jgroups.protocols.FRAG3.up(FRAG3.java:166) [JBossINF] at org.jgroups.protocols.FlowControl.up(FlowControl.java:343) [JBossINF] at org.jgroups.protocols.FlowControl.up(FlowControl.java:343) [JBossINF] at org.jgroups.protocols.pbcast.GMS.up(GMS.java:864) [JBossINF] at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:240) [JBossINF] at org.jgroups.protocols.UNICAST3.deliverMessage(UNICAST3.java:1002) [JBossINF] at org.jgroups.protocols.UNICAST3.handleDataReceived(UNICAST3.java:728) [JBossINF] at org.jgroups.protocols.UNICAST3.up(UNICAST3.java:383) [JBossINF] at org.jgroups.protocols.pbcast.NAKACK2.up(NAKACK2.java:600) [JBossINF] at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:119) [JBossINF] at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:199) [JBossINF] at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:252) [JBossINF] at org.jgroups.protocols.MERGE3.up(MERGE3.java:276) [JBossINF] at org.jgroups.protocols.Discovery.up(Discovery.java:267) [JBossINF] at org.jgroups.protocols.TP.passMessageUp(TP.java:1248) [JBossINF] at org.jgroups.util.SubmitToThreadPool$SingleMessageHandler.run(SubmitToThreadPool.java:87) [JBossINF] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [JBossINF] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [JBossINF] at org.jboss.as.clustering.jgroups.ClassLoaderThreadFactory.lambda$newThread$0(ClassLoaderThreadFactory.java:52) [JBossINF] at java.lang.Thread.run(Thread.java:748) [JBossINF] {code} Scattered cache was configured with bias-lifespan="0". Server configuration: http://jenkins.hosts.mwqe.eng.bos.redhat.com/hudson/job/eap-7x-stress-ses... Server link: http://jenkins.hosts.mwqe.eng.bos.redhat.com/hudson/job/eap-7x-stress-ses...