i mean like below --------------------------------------------------------------------
WordCount also specifies a combiner (line 46). Hence, the output of each map is passed through the local combiner (which is same as the Reducer as per the job configuration) for local aggregation, after being sorted on the keys. The output of the first map: ( why not combine) < Bye, 1> < Hello, 1> < World, 2> The output of the second map: ( why not combine) < Goodbye, 1> < Hadoop, 2> ----- Original Message ----- From: "springring" <springr...@126.com> To: <common-dev@hadoop.apache.org>; <common-u...@hadoop.apache.org> Sent: Sunday, September 27, 2009 10:11 AM Subject: is that a mistake in Hadoop Tutorial? > Hi, > as the red color word in attached file page7. i think it should be > "combine" instead of "map", > or it's my miscommunication? > > br > > Springring.Xu
