Hi Bjorn,
For the two items below, it is possible datanodes and tasktrackers are
already running.
This command will show processes bound to the datanode port:
netstat -putan | grep 50010
tasktracker port:
netstat -putan | grep 50060
If your netstat command does not support the -p option try lsof.
\____Datanodes
...
The second is short kind:
########################### LOG TYPE 2
############################################################
2012-08-13 00:59:19,038 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
...
2012-08-13 00:59:21,898 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.net.BindException:
Problem binding to /0.0.0.0:50010 : Address already in use
...
\_____TastTracker
...
########################### LOG TYPE 2
############################################################
2012-08-13 00:59:24,376 INFO org.apache.hadoop.mapred.TaskTracker:
STARTUP_MSG:
...
2012-08-13 00:59:38,161 ERROR org.apache.hadoop.mapred.TaskTracker: Can
not start task tracker because java.net.BindException: Address already
in use
