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From "Fabrizio detto Mario" <jfabrizi...@gmail.com>
Subject Master Node in Hadoop Map/Reduce Implementation.
Date Thu, 15 May 2008 11:39:23 GMT
Hello Hadoop community,
I read about Hadoop framework (
http://hadoop.apache.org/core/docs/r0.16.3/mapred_tutorial.html) this
"The Map-Reduce framework consists of a single master JobTracker and one
slave TaskTracker per cluster-node..."

Is The Job Tracker (Master Node) unique and static for my cluster? Is The
Job Tracker the same for each map/reduce run?

If the response is positive, hadoop is different from map/reduce Google
implementation. In Google Implementation the Master node is "one copies of
program" (See MapReduce: Simplified Data Processing on Large Clusters).



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