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From Apache Wiki <wikidi...@apache.org>
Subject [Pig Wiki] Update of "PigMultiQueryPerformanceSpecification" by RichardDing
Date Tue, 05 May 2009 22:51:47 GMT
Dear Wiki user,

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The following page has been changed by RichardDing:
http://wiki.apache.org/pig/PigMultiQueryPerformanceSpecification

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     2. Set the index on the leaf operator of the map plan based on the order this map plan
on the inner plan list.
     3. Add the reduce plan of the splittee to the inner plan list of the demux operator in
the same order as the corresponding map plan.
     4. The outputs of merged map plan of the splitter are indexed key/value pairs and are
sent to the reduce tasks.
-    5. The demux operator extracts the index from the key/values it receives and attaches
them to the corresponding reduce plan in its inner plan list.
+    5. The demux operator extracts the index from the key/values it receives and uses it
to find the corresponding reduce plan in its inner plan list.
     6. The chosen reduce plan consumes the key/values data.
   
  [[Anchor(PartitionScheme)]]

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