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From Naresh Rapolu <nrap...@purdue.edu>
Subject limiting the number of keys per region server
Date Mon, 09 Nov 2009 23:05:10 GMT

We are running a MapReduce program over HBase using  TableMapper.  But  
due to the limited amount of data ( which is sitting in one region 
server) , only 1 Map task is being spawned  for the map phase.
We are aware that one Map Task is spawned for every region server that 
contains keys in that table. But we want to have several Map tasks to 
increase parallelism. Can we manually either specify the number of keys 
in one region server  or  can we split the present region server ? 


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