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Date: Wed, 15 Mar 2017 17:54:41 +0000 (UTC)
From: "Mukul Kumar Singh (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13056374.1489600440000.29248.1489600481739@Atlassian.JIRA>
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Subject: [jira] [Created] (HDFS-11533) reuseAddress option should be used
 for child channels in Portmap and SimpleTcpServer
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archived-at: Wed, 15 Mar 2017 17:54:48 -0000

Mukul Kumar Singh created HDFS-11533:
----------------------------------------

             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 fo=
r child channels. Binding to the port for child channels can fail because t=
his 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/Connectionle=
ssBootstrap.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/ServerBootst=
rap.html


{noformat}
Started listening to UDP requests at port 4242 for Rpc program: mountd at l=
ocalhost:4242 with workerCount 1\n2017-03-13 07:11:52,970 FATAL mount.Mount=
dBase (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(ServerBootst=
rap.java:272)\n\tat org.apache.hadoop.oncrpc.SimpleTcpServer.run(SimpleTcpS=
erver.java:87)\n\tat org.apache.hadoop.mount.MountdBase.startTCPServer(Moun=
tdBase.java:83)\n\tat org.apache.hadoop.mount.MountdBase.start(MountdBase.j=
ava:98)\n\tat org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startServiceInternal(Nfs=
3.java:56)\n\tat org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startService(Nfs3.jav=
a:69)\n\tat org.apache.hadoop.hdfs.nfs.nfs3.PrivilegedNfsGatewayStarter.sta=
rt(PrivilegedNfsGatewayStarter.java:71)\n\tat sun.reflect.NativeMethodAcces=
sorImpl.invoke0(Native Method)\n\tat sun.reflect.NativeMethodAccessorImpl.i=
nvoke(NativeMethodAccessorImpl.java:62)\n\tat sun.reflect.DelegatingMethodA=
ccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.re=
flect.Method.invoke(Method.java:498)\n\tat org.apache.commons.daemon.suppor=
t.DaemonLoader.start(DaemonLoader.java:243)\nCaused by: java.net.BindExcept=
ion: 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$RegisterTask.run(Ni=
oServerBoss.java:193)\n\tat org.jboss.netty.channel.socket.nio.AbstractNioS=
elector.processTaskQueue(AbstractNioSelector.java:366)\n\tat org.jboss.nett=
y.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:290)\=
n\tat org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.ja=
va:42)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolEx=
ecutor.java:1142)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(=
ThreadPoolExecutor.java:617)\n\tat java.lang.Thread.run(Thread.java:745)\n2=
017-03-13 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 (LogAda=
pter.java:info(45)) - SHUTDOWN_MSG:=20
{noformat}


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