org.apache.hadoop.hive.ql.optimizer.physical
Class BucketingSortingOpProcFactory.GroupByInferrer

java.lang.Object
  org.apache.hadoop.hive.ql.optimizer.physical.BucketingSortingOpProcFactory.DefaultInferrer
      org.apache.hadoop.hive.ql.optimizer.physical.BucketingSortingOpProcFactory.GroupByInferrer

All Implemented Interfaces:

NodeProcessor

Direct Known Subclasses:

BucketingSortingOpProcFactory.MultiGroupByInferrer

Enclosing class:

BucketingSortingOpProcFactory

public static class BucketingSortingOpProcFactory.GroupByInferrer
extends BucketingSortingOpProcFactory.DefaultInferrer
implements NodeProcessor

Processor for GroupBy operator. This handles the standard use of a group by operator, the tree should look like ReduceSinkOperator --- GroupByOperator It is up to the caller to guarantee the tree matches this pattern.

Constructor Summary

BucketingSortingOpProcFactory.GroupByInferrer()

Method Summary

Object

process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx, Object... nodeOutputs) Generic process for all ops that don't have specific implementations.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BucketingSortingOpProcFactory.GroupByInferrer

public BucketingSortingOpProcFactory.GroupByInferrer()

Method Detail

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

Overrides:

process in class BucketingSortingOpProcFactory.DefaultInferrer

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