Hi all, I just want to know that, based on what factor map reduce framework decides number of reducers to launch for a job
By default only one reducer will be launched for a given job is this right? If we explicitly does not mention number to launch via command line or driver class. If i choose to decide number of reducers to mention explicitly, what should I consider.Because choosing in appropriate number of reducer hampers the performance. Sorry for this question, am little confused on this number of reducers. Regards Abhishek Sent from my iPhone
