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Posted to mapreduce-user@hadoop.apache.org by "Konstantinos A." <ko...@hotmail.com> on 2013/09/16 13:51:48 UTC

hadoop join example

Hi all,

Can anyone explains how the join example in the hadoop source code  examples folder works?

What I don't really understand is how it works the "mapred.join.expr" parameter in the jobconf.

Thanks in advance!

K.A