FAQ
Hey All,

I am trying to install hadoop 0.20.2 and proceeded till daemon-start-up
bin/start-all.sh.
But I see no datanode created.

jps output:
43323 JobTracker
43281 SecondaryNameNode
43162 NameNode
43403 Jps
43381 TaskTracker
19747

Named node log:
2011-01-31 15:08:47,343 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 6 on 9000, call addBlock(/tmp/hadoop-sjagannath/mapred/system/
jobtracker.info, DFSClient_-462680310) from 127.0.0.1:61167: error:
java.io.IOException: File /tmp/hadoop-sjagannath/mapred/system/
jobtracker.info could only be replicated to 0 nodes, instead of 1
java.io.IOException: File /tmp/hadoop-sjagannath/mapred/system/
jobtracker.info could only be replicated to 0 nodes, instead of 1
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1271)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)


I am sure, I am doing what ever the quickstarts asks me to do.
I am following:
a.
http://hadoop-tutorial.blogspot.com/2010/11/running-hadoop-in-pseudo-distributed.html
b. http://hadoop.apache.org/common/docs/current/single_node_setup.html

I am no sure what is going on.
I would love to clear this hurdle and get my hand dirty with the actual
work.
Please let me know what is happening.


Thanks,
Sharath

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  • Harsh J at Feb 1, 2011 at 4:09 am
    Check your DataNode logs under $HADOOP_HOME/logs/. It would have the
    reason why it did not start.

    You can also issue `hadoop datanode` and watch the exceptional movie play.

    On Tue, Feb 1, 2011 at 4:46 AM, sharath jagannath
    wrote:
    Hey All,

    I am trying to install hadoop 0.20.2 and proceeded till daemon-start-up
    bin/start-all.sh.
    But I see no datanode created.

    jps output:
    43323 JobTracker
    43281 SecondaryNameNode
    43162 NameNode
    43403 Jps
    43381 TaskTracker
    19747

    Named node log:
    2011-01-31 15:08:47,343 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 6 on 9000, call addBlock(/tmp/hadoop-sjagannath/mapred/system/
    jobtracker.info, DFSClient_-462680310) from 127.0.0.1:61167: error:
    java.io.IOException: File /tmp/hadoop-sjagannath/mapred/system/
    jobtracker.info could only be replicated to 0 nodes, instead of 1
    java.io.IOException: File /tmp/hadoop-sjagannath/mapred/system/
    jobtracker.info could only be replicated to 0 nodes, instead of 1
    at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1271)
    at
    org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
    at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)


    I am sure, I am doing what ever the quickstarts asks me to do.
    I am following:
    a.
    http://hadoop-tutorial.blogspot.com/2010/11/running-hadoop-in-pseudo-distributed.html
    b. http://hadoop.apache.org/common/docs/current/single_node_setup.html

    I am no sure what is going on.
    I would love to clear this hurdle and get my hand dirty with the actual
    work.
    Please let me know what is happening.


    Thanks,
    Sharath


    --
    Harsh J
    www.harshj.com

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groupcommon-user @
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postedJan 31, '11 at 11:19p
activeFeb 1, '11 at 4:09a
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websitehadoop.apache.org...
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Harsh J: 1 post Sharath jagannath: 1 post

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