Partition merges when using topology hintscan cause null pointers and leave the system in an unstable state ----------------------------------------------------------------------------------------------------------- Key: ISPN-1066 URL: https://issues.jboss.org/browse/ISPN-1066 Project: Infinispan Issue Type: Bug Components: Distributed Cache Affects Versions: 5.0.0.BETA2, 4.2.1.FINAL Reporter: Manik Surtani Assignee: Manik Surtani Priority: Critical Fix For: 4.2.2.BETA1, 5.0.0.CR1, 5.0.0.FINAL Due to a missing null check in MergeTask, and the way TopologyInfo instances are dealt with (inconsistently) in DistributionManagerImpl and ConsistentHash implementations. In this scenario, seen on the joining node: {code} Caused by: java.lang.NullPointerException at org.infinispan.distribution.DistributionManagerImpl.informRehashOnJoin(DistributionManagerImpl.java:475) at org.infinispan.commands.control.RehashControlCommand.perform(RehashControlCommand.java:134) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:145) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithWaitForBlocks(InboundInvocationHandlerImpl.java:159) at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithRetry(InboundInvocationHandlerImpl.java:249) at org.infinispan.remoting.InboundInvocationHandlerImpl.handle(InboundInvocationHandlerImpl.java:131) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.executeCommand(CommandAwareRpcDispatcher.java:159) at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:144) at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:577) at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:488) at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:364) {code} and on the coordinator: {code} Caused by: java.lang.NullPointerException at org.infinispan.distribution.DistributionManagerImpl.rehash(DistributionManagerImpl.java:283) at org.infinispan.distribution.DistributionManagerImpl$ViewChangeListener.handleViewChange(DistributionManagerImpl.java:563) at sun.reflect.GeneratedMethodAccessor482.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.infinispan.notifications.AbstractListenerImpl$ListenerInvocation$1.run(AbstractListenerImpl.java:175) {code} -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira