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Package org.apache.pig

Added Classes and Interfaces
Accumulator  
CommittableStoreFunc A storefunc which has an extra commit() method which is called when all mappers (when the storefunc is part of map) or reducers (when the storefunc is part of reduce) are finished.
IndexableLoadFunc This interface is intended for use by LoadFunc implementations which have an internal index for sorted data and can use the index to support merge join in pig.
LoadFunc.RequiredField  
LoadFunc.RequiredFieldList  
LoadFunc.RequiredFieldResponse  
SamplableLoader Implementing this interface indicates to Pig that a given loader can be used by a sampling loader.
SortColInfo A class representing information about a sort column to pass in SortInfo to storage functions in StoreConfig
SortColInfo.Order  
SortInfo Class to communicate sort column information based on order by statment's sort columns and schema
 

Changed Classes and Interfaces
LoadFunc This interface is used to implement functions to parse records from a dataset.
PigServer This class is the program's connection to Pig.
PigWarning An enum to enumerate the warning types in Pig
StoreConfig A Class which will encapsulate metadata information that a OutputFormat (or possibly StoreFunc) may want to know about the data that needs to be stored.