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The following page has been changed by OlgaN:
http://wiki.apache.org/pig/PigStreamingFunctionalSpec

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   2. !FlattenSerializer - it would take a bag and flatten it before passing it 
to streaming application.
   3. !PythonSerializer, !PythonDeserializer 
  
- ==== Ability to declare schema for streaming output ====
+ ==== 3.2 Ability to declare schema for streaming output ====
  
  Just like the case with load, rather than relying on the position, the user 
can give names to the output columns:
  
@@ -195, +195 @@

  S = stream A through `stream.pl` as (a, b ,c);
  }}}
  
- ==== 3.2 Ability to let streaming read from file(s) on disk ====
+ ==== 3.3 Ability to let streaming read from file on disk ====
  
  This is useful in two cases:
  

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