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https://issues.apache.org/jira/browse/ARTEMIS-264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Bertram resolved ARTEMIS-264.
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Resolution: Cannot Reproduce
> NPE from Netty at Pub Sub tests with Topics
> -------------------------------------------
>
> Key: ARTEMIS-264
> URL: https://issues.apache.org/jira/browse/ARTEMIS-264
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: Broker
> Affects Versions: 1.2.0
> Reporter: Glaucio Melo
> Priority: Major
>
> I was performing some tests using as basis the JMeter samples at
> https://github.com/apache/activemq-artemis/tree/master/examples/perf/jmeter
> And I've got an exception message from the client consumer:
> Oct 16, 2015 6:24:12 PM
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl$Runner run
> ERROR: AMQ214000: Failed to call onMessage
> java.lang.NullPointerException
> at io.netty.buffer.PoolChunk.initBufWithSubpage(PoolChunk.java:381)
> at io.netty.buffer.PoolChunk.initBufWithSubpage(PoolChunk.java:369)
> at io.netty.buffer.PoolArena.allocate(PoolArena.java:194)
> at io.netty.buffer.PoolArena.allocate(PoolArena.java:132)
> at
> io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:271)
> at
> io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:155)
> at
> io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:146)
> at
> org.apache.activemq.artemis.core.remoting.impl.netty.PartialPooledByteBufAllocator.directBuffer(PartialPooledByteBufAllocator.java:91)
> at
> org.apache.activemq.artemis.core.remoting.impl.netty.NettyConnection.createTransportBuffer(NettyConnection.java:154)
> at
> org.apache.activemq.artemis.spi.core.protocol.AbstractRemotingConnection.createTransportBuffer(AbstractRemotingConnection.java:156)
> at
> org.apache.activemq.artemis.core.protocol.core.impl.PacketImpl.encode(PacketImpl.java:267)
> at
> org.apache.activemq.artemis.core.protocol.core.impl.ChannelImpl.send(ChannelImpl.java:225)
> at
> org.apache.activemq.artemis.core.protocol.core.impl.ChannelImpl.sendBatched(ChannelImpl.java:205)
> at
> org.apache.activemq.artemis.core.protocol.core.impl.ActiveMQSessionContext.sendACK(ActiveMQSessionContext.java:400)
> at
> org.apache.activemq.artemis.core.client.impl.ClientSessionImpl.acknowledge(ClientSessionImpl.java:672)
> at
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.doAck(ClientConsumerImpl.java:1035)
> at
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.acknowledge(ClientConsumerImpl.java:702)
> at
> org.apache.activemq.artemis.core.client.impl.ClientMessageImpl.acknowledge(ClientMessageImpl.java:96)
> at
> org.apache.activemq.artemis.core.client.impl.ClientMessageImpl.acknowledge(ClientMessageImpl.java:38)
> at
> org.apache.activemq.artemis.jms.client.JMSMessageListenerWrapper.onMessage(JMSMessageListenerWrapper.java:120)
> at
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.callOnMessage(ClientConsumerImpl.java:932)
> at
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.access$400(ClientConsumerImpl.java:47)
> at
> org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl$Runner.run(ClientConsumerImpl.java:1045)
> at
> org.apache.activemq.artemis.utils.OrderedExecutorFactory$OrderedExecutor$1.run(OrderedExecutorFactory.java:94)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> This error only happened at my tests only one time, not sure on how to
> reproduce it. I was looking for a similar error from netty project and I've
> found this link:
> https://github.com/netty/netty/issues/4198
> From the discussion at this link, it seems that the guy who reports the issue
> said that he was using netty incorrectly (not sure exactly what he meant
> about that). I'm creating this ticket because it's possible to get something
> similar from Artemis - by using netty library unexpectedly.
> Thanks,
> Glaucio Melo
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