Hi, All
I have a small question about configuration. In Hadoop Documentation page, it says " Typically you choose one machine in the cluster to act as the NameNode and one machine as to act as the JobTracker, exclusively. The rest of the machines act as both a DataNode and TaskTracker and are referred to as slaves." Does that mean the JobTracker is not a slave as NameNode ? NameNode and DataNode form the HDFS. Since the JobTracker needs to interact with TaskTracker which resides in HDFS, to make the communication easier, I think it should be at least part of the HDFS. Best Regards Jian Zhang
