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POerror in starting Namenode : java.io.IOException
 

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  1. POerror in starting Namenode : java.io.IOException
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    <p>anybody pls help. i am new to hadoop. i followed all steps from here : <a href="http://ebiquity.umbc.edu/Tutorials/Hadoop/00%20-%20Intro.html" rel="nofollow">http://ebiquity.umbc.edu/Tutorials/Hadoop/00%20-%20Intro.html</a>, all thing goes well till setup hadoop plugin. after i tried to start namenode using command : bin/hadoop namenode. it shows error as bellow.</p> <blockquote> <pre><code>raj@raj-PC ~/hadoop-0.19.1 $ bin/hadoop namenode cygwin warning: MS-DOS style path detected: C:\cygwin\home\raj\HADOOP~1.1\/build/native Preferred POSIX equivalent is: /home/raj/HADOOP~1.1/build/native CYGWIN environment variable option "nodosfilewarning" turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames 13/12/12 13:36:33 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = raj-PC/192.168.2.2 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.19.1 STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.19 -r </code></pre> <p>745977; compiled by 'ndaley' on Fri Feb 20 00:16:34 UTC 2009 <strong><em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>***</strong>/ 13/12/12 13:36:55 ERROR namenode.NameNode: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:125) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:69) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.(PipeImpl.java:141) at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50) at java.nio.channels.Pipe.open(Pipe.java:150) at sun.nio.ch.WindowsSelectorImpl.(WindowsSelectorImpl.java:126) at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44) at java.nio.channels.Selector.open(Selector.java:227) at org.apache.hadoop.ipc.Server$Listener.(Server.java:237) at org.apache.hadoop.ipc.Server.(Server.java:960) at org.apache.hadoop.ipc.RPC$Server.(RPC.java:465) at org.apache.hadoop.ipc.RPC.getServer(RPC.java:427) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:153) at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:208) at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:194) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:859) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:868) Caused by: java.net.ConnectException: Connection timed out: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Net.java:364) at sun.nio.ch.Net.connect(Net.java:356) at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:623) at java.nio.channels.SocketChannel.open(SocketChannel.java:184) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:97) ... 17 more</p> <pre><code>13/12/12 13:36:55 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at raj-PC/192.168.2.2 ************************************************************/ </code></pre> </blockquote> <p>.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USRaju Sharma
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COHave you formatted your namenode before starting it? If you are starting your name node for the first time you need to format it using command:- bin/hadoop namenode -format
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      1. POerror in starting Namenode : java.io.IOException
      1. USMadhura
    2. COHai Madhura , i have formatted namenode before itself as given in the steps http://ebiquity.umbc.edu/Tutorials/Hadoop/00%20-%20Intro.html :-) .it is giving me java.lang.IOException : loopback error. s I am using Windows 7, Eclipse Indigo , Hadoop-0.19.1, and Cygwin
      singulars
      1. POerror in starting Namenode : java.io.IOException
      1. USRaju Sharma
    3. COHai thnk you for reply i got it. i uninstall antivirus and it works for me.
      singulars
      1. POerror in starting Namenode : java.io.IOException
      1. USRaju Sharma
 

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