Hi, I am new to hadoop (Just 1 month old). These are the steps I followed to install and run hadoop-0.20.203.0:
1) Downloaded tar file from http://mirrors.axint.net/apache/hadoop/common/hadoop-0.20.203.0/hadoop-0.20.203.0rc1.tar.gz. 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 [ http://hadoop.apache.org/common/docs/r0.20.203.0/single_node_setup.html#PseudoDistributed]. 5) Formatted the new distributed-filesystem using bin/hadoop namenode -format 6) Started the hdfs daemon using bin/start-dfs.sh Now, here is the error... # start-dfs.sh starting namenode, logging to /usr/local/hadoop/bin/../logs/hadoop-root-namenode-ip-10-98-94-62.out localhost: starting datanode, logging to /usr/local/hadoop/bin/../logs/hadoop-root-datanode-ip-10-98-94-62.out localhost: starting secondarynamenode, logging to /usr/local/hadoop/bin/../logs/hadoop-root-secondarynamenode-ip-10-98-94-62.out 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? Thanks. With regards, Rutesh Chavda
