[infinispan-dev] NPE from invokeRemotely on stopped cache

Hello, I got the following stacktrace using CR2: [exec] java.lang.NullPointerException [exec] at org.infinispan.remoting.rpc.RpcManagerImpl.invokeRemotely(RpcManagerImpl.java:92) [exec] at org.infinispan.remoting.rpc.RpcManagerImpl.invokeRemotely(RpcManagerImpl.java:128) [exec] at org.infinispan.remoting.ReplicationQueue.flush(ReplicationQueue.java:147) [exec] at org.infinispan.remoting.ReplicationQueue$1.run(ReplicationQueue.java:99) [exec] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [exec] at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) [exec] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) [exec] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) [exec] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) [exec] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) [exec] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [exec] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [exec] at java.lang.Thread.run(Thread.java:619) org.infinispan.remoting.transport.jgroups.JGroupsTransport; in this class the "members" field is initialized as Collections.emptyList() and it appears that the only way to become null is by stopping the cache. Also it seems that in many points the check "members!=null" is performed, but not in RpcManagerImpl. Could the stop() method be changed to set this value to emptyList() too, so that all those "!=null" checks could be avoided, or if you see good reasons to throw an error then what would be a better one than NPE. I'm also wondering if this is supposed to happen: isn't this a race condition during the stop process of the cache? I'd like to stop it after all replications have been sent, seems cleaner. Regards, Sanne