Hi All, I was running a cluster of one master and 4 slaves. I copied the hadoop_install folder from the master to all 4 slaves, and configured them well. How ever when i sh start-all.sh from the master machine. It shows below:
starting namenode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-namenode-west-desktop.out slave2: ssh: connect to host slave2 port 22: Connection refused master: starting datanode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-west-desktop.out slave4: starting datanode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-hadoop12.out slave3: starting datanode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-hadoop-desktop.out slave1: starting datanode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-kong-desktop.out master: starting secondarynamenode, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-secondarynamenode-west-desktop.out starting jobtracker, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-jobtracker-west-desktop.out slave2: ssh: connect to host slave2 port 22: Connection refused slave4: starting tasktracker, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-hadoop12.out master: starting tasktracker, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-west-desktop.out slave3: starting tasktracker, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-hadoop-desktop.out slave1: starting tasktracker, logging to /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-kong-desktop.out I know that slave2 is not on. But that should not be the problem. After this , I typed 'jps' in the master's shell, and it shows: 6907 Jps 6306 DataNode 6838 TaskTracker 6612 JobTracker 6533 SecondaryNameNode And when I opened this link "localhost:50030",the page said : master Hadoop Map/Reduce Administration Quick Links <http://master:50030/jobtracker.jsp#quicklinks> *State:* INITIALIZING *Started:* Mon Aug 27 14:54:46 CST 2012 *Version:* 0.20.2, r911707 *Compiled:* Fri Feb 19 08:07:34 UTC 2010 by chrisdo *Identifier:* 201208271454 I don't quite get what the "State : INITIALIZING" means. Additionally, i cannot open "localhost:50070". So, Any suggestions ? Thanks in advance. CH -- in a hadoop learning cycle
