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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Update of "Hbase/RDF" by InchulSong
Date Fri, 17 Aug 2007 03:34:08 GMT
Dear Wiki user,

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

The following page has been changed by InchulSong:
http://wiki.apache.org/lucene-hadoop/Hbase/RDF

The comment on the change is:
correct incorrect info.

------------------------------------------------------------------------------
  subject, each map worker only needs to read logN tuples in table S, where
  N is the number of tuples in S, which results in fast join performance.
  
+ There is a paper on this subject 
- We have been notified by one of the researchers who have already done 
- a good research on this subject. There is a paper on this subject 
  written by Yang. et al, from Yahoo (SIGMOD 07). The paper provides 
  Map-Reduce-Merge, which is an extended version of MapReduce, 
  that implements several relational operators including joins. 
- See the Paper section below for more information.
+ See the Paper section below for more information. -- Thanks stack.
  
  The key parts are how efficienly MapReduce performs joins and 
  how cleverly we materialize join results for efficient query processing of RDF path queries.
Especially, the formal part is the key to beat 

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