Hello! I am a new hadoop user and my question may sound naive.. However, I would like to ask if there is a way to combine the results of two mpa tasks that may "run" simultaneously. I use the MultipleInput class and thus I have two different mappers. I want the result/output of the one map (associated with one input file) to be used in the process of the second map (associated with the second input file). I have thought of storing the map1 output in the hdfs and retrieving it using the map2. However, I have no clue whether this is possible. I mean...what about time-executing issues? map2 has to wait until map1 is completed...
The thought of executing them in a serial manner is not the one I really want... Any suggestion would be appreciated. Thank you in advance :) -- View this message in context: http://www.nabble.com/combine-two-map-tasks-tp24240928p24240928.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
