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

Removed Methods
void connectMapToReduceLimitedSort(MapReduceOper, MapReduceOper)  
POForEach getPlainForEachOP()  
Pair getQuantileJob(POSort, MapReduceOper, FileSpec, FileSpec, int, Pair[])  
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.
MapReduceOper getSortJob(POSort, MapReduceOper, FileSpec, FileSpec, int, Pair[])  
void simpleConnectMapToReduce(MapReduceOper)  
 

Added Methods
void aggregateScalarsFiles()  
void connectSoftLink()  
void visitMergeCoGroup(POMergeCogroup) Leftmost relation is referred as base relation (this is the one fed into mappers.) First close all MROpers except for first one (referred as baseMROPer) Then create a MROper which will do indexing job (idxMROper) Connect idxMROper before the mappedMROper in the MRPlan.
void visitNative(PONative)  
 

Added Fields
String FILE_CONCATENATION_THRESHOLD  
String OPTIMISTIC_FILE_CONCATENATION