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  1. AMQ Broker
  2. ENTMQBR-3100

[AMQ 7.4, KQUEUE] Unable to check KQueue availability : java.lang.NoClassDefFoundError: io/netty/channel/kqueue/KQueue

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    • ARTEMIS-2477
    • Verified in a release
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      To workaround the issue I downloaded netty-transport-native-kqueue-4.1.32.Final.jar and added it to the "AMQ7.4.0/lib".

      This appears to have resolved the issue.

      I suspect it may be possible to avoid this by setting "useKQueue=false" in the acceptors url BUT I have not tested this on AMQ 7.4.

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      To workaround the issue I downloaded netty-transport-native-kqueue-4.1.32.Final.jar and added it to the "AMQ7.4.0/lib". This appears to have resolved the issue. I suspect it may be possible to avoid this by setting "useKQueue=false" in the acceptors url BUT I have not tested this on AMQ 7.4.
      • create a broker instance using AMQ 7.4.0 GA on MacOS and start.

      Starting AMQ 7.4 broker instance on MacOS logged a lot of the following warnings.

      2019-08-07 09:57:37,608 WARN  [org.apache.activemq.artemis.core.client] AMQ212073: Unable to check KQueue availability : java.lang.NoClassDefFoundError: io/netty/channel/kqueue/KQueue
	at org.apache.activemq.artemis.core.remoting.impl.netty.CheckDependencies.isKQueueAvailable(CheckDependencies.java:45) [artemis-core-client-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.remoting.impl.netty.NettyAcceptor.start(NettyAcceptor.java:357) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.remoting.server.impl.RemotingServiceImpl.startAcceptors(RemotingServiceImpl.java:308) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl.completeActivation(ActiveMQServerImpl.java:2921) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.server.impl.LiveOnlyActivation.run(LiveOnlyActivation.java:74) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl.internalStart(ActiveMQServerImpl.java:600) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl.start(ActiveMQServerImpl.java:527) [artemis-server-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.integration.FileBroker.start(FileBroker.java:70) [artemis-cli-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.cli.commands.Run.execute(Run.java:85) [artemis-cli-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.cli.Artemis.internalExecute(Artemis.java:150) [artemis-cli-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:98) [artemis-cli-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:125) [artemis-cli-2.9.0.redhat-00002.jar:2.9.0.redhat-00002]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_20]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_20]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_20]
	at java.lang.reflect.Method.invoke(Method.java:483) [rt.jar:1.8.0_20]
	at org.apache.activemq.artemis.boot.Artemis.execute(Artemis.java:129) [artemis-boot.jar:2.9.0.redhat-00002]
	at org.apache.activemq.artemis.boot.Artemis.main(Artemis.java:49) [artemis-boot.jar:2.9.0.redhat-00002]

      In a master/slave replication it was extremely noisy in the logging.

      It seems there where changes in this area - see ARTEMIS-2301

              rh-ee-ataylor Andy Taylor
              dbruscin Domenico Francesco Bruscino
              Oleg Sushchenko Oleg Sushchenko
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                Created:
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