Daniel Bevenius created AS7-4274: ------------------------------------ Summary: Remoting deadlock after deserialization exception of a large object graph returned from EJB. Key: AS7-4274 URL: https://issues.jboss.org/browse/AS7-4274 Project: Application Server 7 Issue Type: Bug Components: EJB, Remoting Affects Versions: 7.1.1.Final Environment: JBoss AS 7.1.1.Final Reporter: Daniel Bevenius Assignee: jaikiran pai The use case is a remote EJB client that calls an EJB which returns a large object graph. Due to a configuration error on our part a class that is part of this object graph is not available in the clients classpath. This causes a ClassNotFoundException to be thrown when deserializing, and after this exception is thrown the client "freezes" but can be interrupted by CTRL+C, but the server will deadlock and will not respond and has to be shutdown by killing the server process. Below is part of the thread dump (the complete thread dump will be attached to this jira) {noformat} "Remoting "beve-7719" read-1" prio=5 tid=00000000028cc800 nid=0xb56ab000 waiting for monitor entry [00000000b56aa000] java.lang.Thread.State: BLOCKED (on object monitor) at org.xnio.streams.BufferPipeOutputStream.close(BufferPipeOutputStream.java:156) - waiting to lock <0000000005697300> (a org.xnio.streams.BufferPipeOutputStream) at org.xnio.IoUtils.safeClose(IoUtils.java:137) at org.jboss.remoting3.remote.OutboundMessage.closeAsync(OutboundMessage.java:158) at org.jboss.remoting3.remote.RemoteConnectionChannel.handleAsyncClose(RemoteConnectionChannel.java:502) at org.jboss.remoting3.remote.RemoteReadListener.handleEvent(RemoteReadListener.java:259) at org.jboss.remoting3.remote.RemoteReadListener.handleEvent(RemoteReadListener.java:45) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72) at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:189) at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:103) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72) at org.xnio.nio.NioHandle.run(NioHandle.java:90) at org.xnio.nio.WorkerThread.run(WorkerThread.java:184) Locked ownable synchronizers: - None "EJB default - 4" prio=5 tid=0000000002a10c00 nid=0xb3971000 in Object.wait() [00000000b3970000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <00000000056972d0> (a org.jboss.remoting3.remote.OutboundMessage) at java.lang.Object.wait(Object.java:485) at org.jboss.remoting3.remote.OutboundMessage$1.accept(OutboundMessage.java:91) - locked <00000000056972d0> (a org.jboss.remoting3.remote.OutboundMessage) at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:125) at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:113) at org.xnio.streams.BufferPipeOutputStream.getBuffer(BufferPipeOutputStream.java:77) at org.xnio.streams.BufferPipeOutputStream.write(BufferPipeOutputStream.java:86) - locked <0000000005697300> (a org.xnio.streams.BufferPipeOutputStream) at org.jboss.remoting3.remote.OutboundMessage.write(OutboundMessage.java:168) at java.io.DataOutputStream.write(DataOutputStream.java:71) - locked <00000000056972b8> (a java.io.DataOutputStream) at org.jboss.as.ejb3.remote.protocol.versionone.AbstractMessageHandler$1.write(AbstractMessageHandler.java:188) at java.io.OutputStream.write(OutputStream.java:99) at org.jboss.marshalling.OutputStreamByteOutput.write(OutputStreamByteOutput.java:56) at org.jboss.marshalling.SimpleDataOutput.flush(SimpleDataOutput.java:311) at org.jboss.marshalling.SimpleDataOutput.write(SimpleDataOutput.java:82) at org.jboss.marshalling.river.BlockMarshaller.flush(BlockMarshaller.java:306) at org.jboss.marshalling.river.RiverMarshaller.writeEndBlock(RiverMarshaller.java:961) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1008) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:885) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:825) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1063) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1019) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:885) at org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:62) at org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:119) at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.writeMethodInvocationResponse(MethodInvocationMessageHandler.java:338) at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.access$500(MethodInvocationMessageHandler.java:64) at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler$1.run(MethodInvocationMessageHandler.java:226) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) at org.jboss.threads.JBossThread.run(JBossThread.java:122) Locked ownable synchronizers: - <0000000008350f48> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) {noformat} -- This message is automatically generated by JIRA. 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