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From Apache Wiki <>
Subject [Hama Wiki] Trivial Update of "Hamburg" by udanax
Date Wed, 01 Jul 2009 03:05:18 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hama Wiki" for change notification.

The following page has been changed by udanax:

  The main difference between Hamburg and M/R is that Hamburg does not make intermediate data
aggregate into reducer. Instead, each computation node communicates only necessary data into
one another. 
  It will be efficient if total communicated data is smaller then intermediate data to be
aggregated into reducers.
+ === initial contributors ===
+  * Edward J. (edwardyoon AT
+  * Hyunsik Choi (hyunsik.choi AT
+ Any volunteers are welcome.

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