Hi All, I want to run "MRBench" benchmark to test the performance of my Hadoop cluster. The command with parameters which I am submitting is: *hadoop jar $HADOOP_HOME/hadoop-test.jar mrbench -numRuns <value> -maps <value> -reduces <value> -inputLines <value> -inputType *random
For different number of "maps value" I am submitting, I can see that the actual number of maps running are different. According to my assumption, MRBench should use the parameters exactly which I submit. But there's a difference in number of Maps. Is my assumption correct? Am I doing some mistake? Can someone describe/suggest how MRBench works and how I can evaluate MRBench results to test the performance of my cluster? Thanks, Gaurav Dasgupta
