org.apache.hadoop.hive.ql.optimizer

Class GroupByOptimizer.SortGroupByProcessor

java.lang.Object

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

Fields

Modifier and Type	Field and Description
protected ParseContext	pGraphContext

Constructor Summary

Constructors

Constructor and Description
SortGroupByProcessor(ParseContext pGraphContext)

Method Summary

Modifier and Type	Method and Description
protected boolean	checkGroupByOperatorProcessed(GroupByOptimizer.GroupByOptimizerContext groupBySortOptimizerContext, GroupByOperator groupByOp)
protected GroupByOptimizer.GroupByOptimizerSortMatch	checkSortGroupBy(Stack<Node> stack, GroupByOperator groupByOp)
protected void	convertGroupByMapSideSortedGroupBy(HiveConf conf, 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)
boolean	removeChildren(Operator<? extends OperatorDesc> currOp, 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

SortGroupByProcessor

public 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(HiveConf conf,
                                                  GroupByOperator groupByOp,
                                                  int depth)

removeChildren

public boolean removeChildren(Operator<? extends OperatorDesc> currOp,
                              int depth)