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Class org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler

Added Methods
void connectMapToReduceLimitedSort(MapReduceOper, MapReduceOper)  
POForEach getPlainForEachOP()  
Pair getSamplingJob(POSort, MapReduceOper, List, FileSpec, FileSpec, int, List, String, String[], String) Create a sampling job to collect statistics by sampling an input file.
Pair getSkewedJoinSampleJob(POSkewedJoin, MapReduceOper, FileSpec, FileSpec, int) Create Sampling job for skewed join.
void visitCollectedGroup(POCollectedGroup)  
void visitMergeJoin(POMergeJoin) Since merge-join works on two inputs there are exactly two MROper predecessors identified as left and right.
void visitSkewedJoin(POSkewedJoin)  
 

Changed Fields
String USER_COMPARATOR_MARKER Change from non-final to final.