Hello, I was reading Hadoop's getting started ( http://wiki.apache.org/lucene-hadoop/GettingStartedWithHadoop), and in the section named "Starting up a larger cluster" I had a doubt about starting tasktrackers on datanodes. The tutorial says that after running the start-dfs.sh script on the node I want as the namenode, I need to execute the script start-mapred.sh, and this will "bring up the Map/Reduce cluster with Jobtracker running on the machine you ran the command on and Tasktrackers running on machines listed in the slaves file".
It actually brings up the Jobtracker on the machine I ran the command on, but not the tasktrackers on slave machines. I need to enter slave by slave starting the tasktracker manually, issuing the command "hadoop tasktracker" what, according to Hadoop's getting started documentation, is something unnecessary. Did I misunderstand something? Thanks in advance, Lucas
