Reputation: 1533
Can one Job have several Mappers at the same time?
e.g.
job.setMapperClass(Mapper1.class);
job.setMapperClass(Mapper2.class);
job.setMapperClass(Mapper3.class);
Upvotes: 1
Views: 78
Reputation: 241789
Yes, if you use ChainMapper
. In fact, ChainMapper
and ChainReducer
together enable to you execute MapReduce workflows of the form Mapper+ | Reducer | Mapper*
.
Upvotes: 1