NPE during server shutdown when using scattered cache ----------------------------------------------------- Key: ISPN-9095 URL: https://issues.jboss.org/browse/ISPN-9095 Project: Infinispan Issue Type: Bug Components: Core Affects Versions: 9.2.1.Final Reporter: Paul Ferraro Assignee: Radim Vansa Fix For: 9.4.0.Beta1 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...