MRIT's morphline mapper doesn't co-locate with data

[Tom Chen]

Hi,

The MRIT (MapReduceIndexerTool) uses NLineInputFormat for the morphline
mapper. The mapper doesn't co-locate with the input data that it process.
Isn't this a performance hit?

Ideally, morphline mapper should be run on those hosts that contain most
data blocks for the input files it process.

Regards,
Tom