NullPointerException in HotRodDecoder.channelActive --------------------------------------------------- Key: ISPN-6442 URL: https://issues.jboss.org/browse/ISPN-6442 Project: Infinispan Issue Type: Bug Components: Server, Test Suite - Server Affects Versions: 8.2.0.Final Reporter: Dan Berindei Assignee: Dan Berindei Priority: Critical Labels: testsuite_stability Fix For: 9.0.0.Alpha1, 9.0.0.Final {{HotRodServer.startInternal}} first starts the Netty transport (with {{super.startInternal()}}) and only then initializes the {{clientListenerRegistry}} field. That means the server can accept a request before {{clientListenerRegistry}} is initialized, causing a NPE in {{HotRodDecoder.channelActive()}}. Visible as random failures in {{DistTopologyChangeUnderLoadSingleOwnerTest.testRestartServerWhilePutting}}: {noformat} 00:10:54,718 ERROR (HotRodServerWorker-408-1) [CacheDecodeContext] ISPN005009: Unexpected error before any request parameters read java.lang.NullPointerException at org.infinispan.server.hotrod.HotRodDecoder.channelActive(HotRodDecoder.scala:284) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:183) at io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:169) at io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:817) at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:453) at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:377) at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:423) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) java.util.concurrent.ExecutionException: org.infinispan.client.hotrod.exceptions.HotRodClientException:Request for messageId=46498 returned server error (status=0x85): java.lang.NullPointerException at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.infinispan.client.hotrod.DistTopologyChangeUnderLoadSingleOwnerTest.testRestartServerWhilePutting(DistTopologyChangeUnderLoadSingleOwnerTest.java:64) Caused by: org.infinispan.client.hotrod.exceptions.HotRodClientException:Request for messageId=46498 returned server error (status=0x85): java.lang.NullPointerException at org.infinispan.client.hotrod.impl.protocol.Codec20.checkForErrorsInResponseStatus(Codec20.java:343) at org.infinispan.client.hotrod.impl.protocol.Codec20.readPartialHeader(Codec20.java:132) at org.infinispan.client.hotrod.impl.protocol.Codec20.readHeader(Codec20.java:118) at org.infinispan.client.hotrod.impl.operations.HotRodOperation.readHeaderAndValidate(HotRodOperation.java:56) at org.infinispan.client.hotrod.impl.operations.AbstractKeyValueOperation.sendPutOperation(AbstractKeyValueOperation.java:56) at org.infinispan.client.hotrod.impl.operations.PutOperation.executeOperation(PutOperation.java:32) at org.infinispan.client.hotrod.impl.operations.RetryOnFailureOperation.execute(RetryOnFailureOperation.java:54) at org.infinispan.client.hotrod.impl.RemoteCacheImpl.put(RemoteCacheImpl.java:268) at org.infinispan.client.hotrod.impl.RemoteCacheSupport.put(RemoteCacheSupport.java:79) at org.infinispan.client.hotrod.DistTopologyChangeUnderLoadSingleOwnerTest$PutHammer.call(DistTopologyChangeUnderLoadSingleOwnerTest.java:76) at org.infinispan.client.hotrod.DistTopologyChangeUnderLoadSingleOwnerTest$PutHammer.call(DistTopologyChangeUnderLoadSingleOwnerTest.java:67) at org.infinispan.test.AbstractInfinispanTest$LoggingCallable.call(AbstractInfinispanTest.java:478) ... 4 more {noformat}