Take a look at CombineFileInputFormat - this will create 'meta splits' which include multiple small spilts, thus reducing #maps which are run.
Arun On Jul 11, 2012, at 5:29 AM, Manoj Babu wrote: > Hi, > > The no of mappers is depends on the no of blocks. Is it possible to limit the > no of mappers size without increasing the HDFS block size? > > Thanks in advance. > > Cheers! > Manoj. > -- Arun C. Murthy Hortonworks Inc. http://hortonworks.com/
