What do you see in the datanode and tasttracker logs? Abhishek
On Wed, Apr 20, 2011 at 5:30 AM, Rong Yi <[email protected]> wrote: > 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 > >
