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Package org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

Added Classes
POMergeJoin This operator implements merge join algorithm to do map side joins.
POPartitionRearrange The partition rearrange operator is a part of the skewed join implementation.
POSkewedJoin The PhysicalOperator that represents a skewed join.
 

Changed Classes
POLoad The load operator which is used in two ways: 1) As a local operator it can be used to load files 2) In the Map Reduce setting it is used to create jobs from MapReduce operators which keep the loads and stores in the Map and Reduce Plans till the job is created