Starting our multi-node cluster

MapReduce Daemons

Hadoop provides a script that will start and stop all daemons for MapReduce jobs

We want to run the following script to start MapReduce on our master

-bash-4.2$ start-mapred.sh 
starting jobtracker, logging to /usr/local/hadoop-1.0.3/libexec/../logs/hadoop-hduser-jobtracker-peter.test.net.out
chris: starting tasktracker, logging to /usr/local/hadoop-1.0.3/libexec/../logs/hadoop-hduser-tasktracker-chris.test.net.out
lois: starting tasktracker, logging to /usr/local/hadoop-1.0.3/libexec/../logs/hadoop-hduser-tasktracker-lois.test.net.out
meg: starting tasktracker, logging to /usr/local/hadoop-1.0.3/libexec/../logs/hadoop-hduser-tasktracker-meg.test.net.out
peter: starting tasktracker, logging to /usr/local/hadoop-1.0.3/libexec/../logs/hadoop-hduser-tasktracker-peter.test.net.out