hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Owen O'Malley" <owen.omal...@gmail.com>
Subject Re: map side Vs. Reduce side join
Date Tue, 14 Jul 2009 22:12:52 GMT
Map-side join is almost always more efficient, but only handles some cases.
Reduce side joins always work, but require a complete map/reduce job to get
the join.

-- Owen

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message