Hi, I constructed a hadoop environment using 4 host, hadoop1, hadoop2 hadoop3 and hadoop4, which are all Ubuntu10.10 desktop. Hadoop1 is the namenode while the other three are datanode.
After I configured the environment and installed hadoop, I tried to start hadoop. When I executed "start-all.sh", the output information was as follows: starting namenode, logging to /usr/local/hadoop/logs/hadoop-hadoop-namenode-hadoop1.out hadoop1:starting datanode, logging to /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop1.out hadoop3:starting datanode, logging to /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop3.out hadoop4:starting datanode, logging to /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop4.out hadoop2:starting datanode, logging to /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop2.out hadoop1:atarting secondarynamenode, logging to /usr/local/hadoop/logs/hadoop-hadoop-secondarynamenode-hadoop1.out starting jobtracker, logging to /usr/local/hadoop/logs/hadoop-hadoop-jobtracker-hadoop1.out hadoop3:starting tasktracker, logging to /usr/local/hadoop/logs/hadoop-hadoop-tasktracker-hadoop3.out hadoop4:starting tasktracker, logging to /usr/local/hadoop/logs/hadoop-hadoop-tasktracker-hadoop4.out hadoop2:starting tasktracker, logging to /usr/local/hadoop/logs/hadoop-hadoop-tasktracker-hadoop2.out hadoop1:starting tasktracker, logging to /usr/local/hadoop/logs/hadoop-hadoop-tasktracker-hadoop1.out but when I executed "hadoop dfsadmin -report" to check the hadoop state, the result was that: Configured Capacity: 0(0KB) Present Capacity: 0(0KB) DFS Remaining: 0(0KB) DFS Used: 0(0KB) DSF Used%:?% Under Replicated blocks:0 Blocks with corrupt replicas: 0 Missing blocks: 0 ---------------------------------------------------- Databodes available: 0(0 total, 0 dead) When I executed "stop-all.sh", the output is that: Stopping namenode Hadoop1: no datanode to stop Hadoop3: stopping datanode Hadoop4: no datanode to stop Hadoop2: stopping datanode Hadoop1: stopping secondarynamenode Stopping jobtracker Hadoop1: no tasktracker to stop Hadoop3: stopping tasktracker Hadoop2: stopping tasktracker Hadoop4: no tasktracker to stop I don't know why the two datanode and tasktracker cannote start. Could you please help me solve the problem? Thank you in advance! Best Regards! Rong Yi
