Hi, I am going through some samples of using MapReduce with HBase. My question is concerning the importance of the KEYOUT type of a TableReducer. Does the output key really matter if the output value must always be a Put or a Delete instance, in which the row key for the sink table is always specified? Can I just use null when writing the output key in the reducer class (e.g., context.write(null, MyPut))? It seems like in this usage of MapReduce the keyout would be only used when chaining jobs.
-Kevin
