org.apache.hadoop.hive.ql.parse
Class GenTezWork

java.lang.Object
  org.apache.hadoop.hive.ql.parse.GenTezWork

All Implemented Interfaces:

NodeProcessor

public class GenTezWork
extends Object
implements NodeProcessor

GenTezWork separates the operator tree into tez tasks. It is called once per leaf operator (operator that forces a new execution unit.) and break the operators into work and tasks along the way.

Constructor Summary

GenTezWork(GenTezUtils utils)
Constructor takes utils as parameter to facilitate testing

Method Summary

Object

process(Node nd, Stack<Node> stack, NodeProcessorCtx procContext, 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

GenTezWork

public GenTezWork(GenTezUtils utils)

Constructor takes utils as parameter to facilitate testing

Method Detail

process

public Object process(Node nd,
                      Stack<Node> stack,
                      NodeProcessorCtx procContext,
                      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

procContext - 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