NPE and Deadlock during server start ------------------------------------ Key: ISPN-7519 URL: https://issues.jboss.org/browse/ISPN-7519 Project: Infinispan Issue Type: Bug Components: Server, Test Suite - Server Affects Versions: 9.0.0.CR1 Reporter: Gustavo Fernandes Assignee: Gustavo Fernandes Fix For: 9.0.0.CR2, 8.2.7.Final Attachments: server-trace.txt, surefire-trace.txt When running the full test suite, it deadlocked when running the test {{StateTransferSuppressIT.testRebalanceWithFirstNodeStop}}. The server startup printed {noformat} 12:13:07,787 INFO [org.infinispan.factories.GlobalComponentRegistry] (MSC service thread 1-4) ISPN000128: Infinispan version: Infinispan 'Ruppaner' 9.0.0-SNAPSHOT 12:13:08,159 INFO [org.jboss.as.clustering.infinispan] (MSC service thread 1-4) DGISPN0001: Started memcachedCache cache from clustered container 12:13:08,159 INFO [org.jboss.as.clustering.infinispan] (MSC service thread 1-2) DGISPN0001: Started default cache from clustered container 12:13:08,181 INFO [org.infinispan.server.endpoint] (MSC service thread 1-4) DGENDPT10000: MemcachedServer starting 12:13:08,181 INFO [org.infinispan.server.endpoint] (MSC service thread 1-3) DGENDPT10000: HotRodServer starting 12:13:08,182 INFO [org.infinispan.server.endpoint] (MSC service thread 1-4) DGENDPT10001: MemcachedServer listening on 127.0.0.1:11211 12:13:08,182 INFO [org.infinispan.server.endpoint] (MSC service thread 1-3) DGENDPT10001: HotRodServer listening on 127.0.0.1:11222 12:13:08,188 INFO [org.infinispan.server.endpoint] (MSC service thread 1-1) DGENDPT10000: REST starting 12:13:08,259 WARNING [io.netty.channel.epoll.EpollEventLoop] (MemcachedServerMaster-1-1) Unexpected exception in the selector loop.: java.lang.NullPointerException at io.netty.util.internal.shaded.org.jctools.queues.MpscChunkedArrayQueue.poll(MpscChunkedArrayQueue.java:264) at io.netty.util.concurrent.SingleThreadEventExecutor.pollTaskFrom(SingleThreadEventExecutor.java:223) at io.netty.util.concurrent.SingleThreadEventExecutor.pollTask(SingleThreadEventExecutor.java:218) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:306) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873) at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) at java.lang.Thread.run(Thread.java:745) 12:13:08,338 INFO [org.infinispan.rest.NettyRestServer] (MSC service thread 1-1) ISPN012003: REST server starting, listening on 127.0.0.1:8080 12:13:08,338 INFO [org.infinispan.server.endpoint] (MSC service thread 1-1) DGENDPT10002: REST mapped to /rest {noformat} and then hanged. Attached is the stack trace of the server, and the forked test process.