Compressed data would increase processing time in mapper/reducer but decrease the amount of data transferred between tasktracker nodes. Normally you should consider applying some form of compression.
On Wed, Aug 25, 2010 at 7:32 PM, shangan <[email protected]> wrote: > will data stored in compression format affect mapreduce job speed? > increase or decrease? or more complex relationship between these two ? can > anybody give some explanation in detail? > > 2010-08-26 > > > > shangan >
