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From rutesh <rutesh.cha...@gmail.com>
Subject Datanode not created on hadoop-
Date Wed, 15 Jun 2011 16:53:18 GMT

   I am new to hadoop (Just 1 month old). These are the steps I followed to
install and run hadoop-

1) Downloaded tar file from
2) Untarred it in /usr/local/ .
3) Set JAVA_HOME=/usr/lib/jvm/java-6-sun (which has already been installed)
4) Modified the config files viz. core-site.xml , hdfs-site.xml and
mapred-site.xml as provided on the single node installation page [
5) Formatted the new distributed-filesystem using bin/hadoop namenode
6) Started the hdfs daemon using bin/start-dfs.sh

Now, here is the error...

# start-dfs.sh
starting namenode, logging to
localhost: starting datanode, logging to
localhost: starting secondarynamenode, logging to

The terminal says that datanode has been started, but when I run jps
command, its shows different.

# jps
395 Jps
32612 SecondaryNameNode
32442 NameNode

And in the /usr/local/hadoop/logs/hadoop-root-datanode-ip-10-98-94-62.out
this is the log:

Unrecognized option: -jvm
Could not create the Java virtual machine.

My question is, can anybody tell me what is the error or what am I doing
wrong, or in general, how I can make my datanode run?


With regards,
Rutesh Chavda

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