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The "LoadStoreMigrationGuide" page has been changed by PradeepKamath.
http://wiki.apache.org/pig/LoadStoreMigrationGuide?action=diff&rev1=17&rev2=18

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  This page describes how to migrate from the old !LoadFunc and !StoreFunc 
interface (as of Pig 0.6.0) to the new interfaces proposed in 
http://wiki.apache.org/pig/LoadStoreRedesignProposal and planned to be released 
in Pig 0.7.0.
+ 
+ A general note applicable to both !LoadFunc and !StoreFunc implementations is 
that the implementation should use the new Hadoop 20 API based on 
org.apache.hadoop.mapreduce package instead of the old org.apache.hadoop.mapred 
package.
  
  = LoadFunc Migration =
  The methods in the old !LoadFunc have been split among a !LoadFunc abstract 
class which has the main methods for loading data and 3 new interfaces 

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