org.apache.hadoop.hive.ql.optimizer
Class GroupByOptimizer.SortGroupByProcessor

java.lang.Object
  extended by org.apache.hadoop.hive.ql.optimizer.GroupByOptimizer.SortGroupByProcessor
All Implemented Interfaces:
NodeProcessor
Direct Known Subclasses:
GroupByOptimizer.SortGroupBySkewProcessor
Enclosing class:
GroupByOptimizer

public class GroupByOptimizer.SortGroupByProcessor
extends Object
implements NodeProcessor

SortGroupByProcessor.


Field Summary
protected  ParseContext pGraphContext
           
 
Constructor Summary
GroupByOptimizer.SortGroupByProcessor(ParseContext pGraphContext)
           
 
Method Summary
protected  boolean checkGroupByOperatorProcessed(GroupByOptimizer.GroupByOptimizerContext groupBySortOptimizerContext, GroupByOperator groupByOp)
           
protected  GroupByOptimizer.GroupByOptimizerSortMatch checkSortGroupBy(Stack<Node> stack, GroupByOperator groupByOp)
           
protected  void convertGroupByMapSideSortedGroupBy(GroupByOperator groupByOp, int depth)
           
 Object process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx, Object... nodeOutputs)
          Generic process for all ops that don't have specific implementations.
protected  void processGroupBy(GroupByOptimizer.GroupByOptimizerContext ctx, Stack<Node> stack, GroupByOperator groupByOp, int depth)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

pGraphContext

protected ParseContext pGraphContext
Constructor Detail

GroupByOptimizer.SortGroupByProcessor

public GroupByOptimizer.SortGroupByProcessor(ParseContext pGraphContext)
Method Detail

checkGroupByOperatorProcessed

protected boolean checkGroupByOperatorProcessed(GroupByOptimizer.GroupByOptimizerContext groupBySortOptimizerContext,
                                                GroupByOperator groupByOp)

processGroupBy

protected void processGroupBy(GroupByOptimizer.GroupByOptimizerContext ctx,
                              Stack<Node> stack,
                              GroupByOperator groupByOp,
                              int depth)
                       throws SemanticException
Throws:
SemanticException

process

public Object process(Node nd,
                      Stack<Node> stack,
                      NodeProcessorCtx procCtx,
                      Object... nodeOutputs)
               throws SemanticException
Description copied from interface: NodeProcessor
Generic process for all ops that don't have specific implementations.

Specified by:
process in interface NodeProcessor
Parameters:
nd - operator to process
procCtx - operator processor context
nodeOutputs - A variable argument list of outputs from other nodes in the walk
Returns:
Object to be returned by the process call
Throws:
SemanticException

checkSortGroupBy

protected GroupByOptimizer.GroupByOptimizerSortMatch checkSortGroupBy(Stack<Node> stack,
                                                                      GroupByOperator groupByOp)
                                                               throws SemanticException
Throws:
SemanticException

convertGroupByMapSideSortedGroupBy

protected void convertGroupByMapSideSortedGroupBy(GroupByOperator groupByOp,
                                                  int depth)


Copyright © 2011 The Apache Software Foundation