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https://issues.apache.org/jira/browse/HDFS-8268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14555958#comment-14555958
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Vinayakumar B commented on HDFS-8268:
-------------------------------------
+1,
Will commit soon.
> Port conflict log for data node server is not sufficient
> --------------------------------------------------------
>
> Key: HDFS-8268
> URL: https://issues.apache.org/jira/browse/HDFS-8268
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.7.0, 2.8.0
> Environment: x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Mohammad Shahid Khan
> Assignee: Mohammad Shahid Khan
> Priority: Minor
> Labels: BB2015-05-RFC
> Attachments: HDFS-8268.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Data Node Server start up issue due to port conflict.
> The data node server port "dfs.datanode.http.address" conflict is not
> sufficient to identify the reason of failure.
> The exception log by the server is as below
> *Actual:*
> 2015-04-27 16:48:53,960 FATAL
> org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in secureMain
> java.net.BindException: Address already in use
> at sun.nio.ch.Net.bind0(Native Method)
> at sun.nio.ch.Net.bind(Net.java:437)
> at sun.nio.ch.Net.bind(Net.java:429)
> at
> sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
> at
> io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:475)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1021)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:455)
> at
> io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:844)
> at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:194)
> at
> io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:340)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
> at
> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
> at java.lang.Thread.run(Thread.java:745)
> *_The above log does not contain the information of the conflicting port._*
> *Expected output:*
> java.net.BindException: Problem binding to [0.0.0.0:50075]
> java.net.BindException: Address already in use; For more details see:
> http://wiki.apache.org/hadoop/BindException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
> at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
> at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:721)
> at
> org.apache.hadoop.hdfs.server.datanode.web.DatanodeHttpServer.start(DatanodeHttpServer.java:160)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.startInfoServer(DataNode.java:795)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1142)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:439)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2420)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2298)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2349)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2540)
> at
> org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2564)
> Caused by: java.net.BindException: Address already in use
> at sun.nio.ch.Net.bind0(Native Method)
> at sun.nio.ch.Net.bind(Net.java:437)
> at sun.nio.ch.Net.bind(Net.java:429)
> at
> sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
> at
> io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:475)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1021)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:455)
> at
> io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:844)
> at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:194)
> at
> io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:340)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
> at
> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
> at java.lang.Thread.run(Thread.java:745)
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