Have a look at NLineInputFormat class in Hadoop. It is build to split the input on the basis of number of lines.
On Thu, Mar 15, 2012 at 6:13 PM, Deepak Nettem <deepaknet...@gmail.com>wrote: > Hi, > > I have this use case - I need to spawn as many mappers as the number of > lines in a file in HDFS. This file isn't big (only 10-50 lines). Actually > each line represents the path of another data source that the Mappers will > work on. So each mapper will read 1 line, (the map() method will need to be > called only once), and work on the data source. > > What's the best way to construct InputSplit, InputFormat and RecordReader > to achieve this? I would appreciate any example code :) > > Best, > Deepak > -- Thanks & Regards, Anil Gupta
