Mukul Kumar Singh created HDFS-11533:
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Summary: reuseAddress option should be used for child channels in
Portmap and SimpleTcpServer
Key: HDFS-11533
URL: https://issues.apache.org/jira/browse/HDFS-11533
Project: Hadoop HDFS
Issue Type: Bug
Components: nfs
Reporter: Mukul Kumar Singh
Assignee: Mukul Kumar Singh
Bind can fail in SimpleTcpServer because reuseAddress option is not used for
child channels. Binding to the port for child channels can fail because this
option is currently only set for parent channel.
This options is not needed in SimpleUdpServer, Portmap(udpServer)
as they use ConnectionlessBootstrap, where the child option is not needed
https://docs.jboss.org/netty/3.2/api/org/jboss/netty/bootstrap/ConnectionlessBootstrap.html
However Portmap(tcpServer) and SimpleTcpServer
uses ServerBootstrap, where the child option is needed
https://docs.jboss.org/netty/3.2/api/org/jboss/netty/bootstrap/ServerBootstrap.html
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Started listening to UDP requests at port 4242 for Rpc program: mountd at
localhost:4242 with workerCount 1\n2017-03-13 07:11:52,970 FATAL
mount.MountdBase (MountdBase.java:startTCPServer(85)) - Failed to start the TCP
server.\norg.jboss.netty.channel.ChannelException: Failed to bind to:
0.0.0.0/0.0.0.0:4242\n\tat
org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)\n\tat
org.apache.hadoop.oncrpc.SimpleTcpServer.run(SimpleTcpServer.java:87)\n\tat
org.apache.hadoop.mount.MountdBase.startTCPServer(MountdBase.java:83)\n\tat
org.apache.hadoop.mount.MountdBase.start(MountdBase.java:98)\n\tat
org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startServiceInternal(Nfs3.java:56)\n\tat
org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startService(Nfs3.java:69)\n\tat
org.apache.hadoop.hdfs.nfs.nfs3.PrivilegedNfsGatewayStarter.start(PrivilegedNfsGatewayStarter.java:71)\n\tat
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n\tat
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat
java.lang.reflect.Method.invoke(Method.java:498)\n\tat
org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243)\nCaused
by: java.net.BindException: Address already in use\n\tat
sun.nio.ch.Net.bind0(Native Method)\n\tat
sun.nio.ch.Net.bind(Net.java:433)\n\tat sun.nio.ch.Net.bind(Net.java:425)\n\tat
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)\n\tat
sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)\n\tat
org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)\n\tat
org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:366)\n\tat
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:290)\n\tat
org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)\n\tat
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\n\tat
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)\n\tat
java.lang.Thread.run(Thread.java:745)\n2017-03-13 07:11:52,984 INFO
util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status
1\n2017-03-13 07:11:52,987 INFO nfs3.Nfs3Base (LogAdapter.java:info(45)) -
SHUTDOWN_MSG:
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