org.apache.hadoop.hive.ql.optimizer.physical

Class StageIDsRearranger

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.physical.StageIDsRearranger

All Implemented Interfaces:

PhysicalPlanResolver

public class StageIDsRearranger
extends Object
implements PhysicalPlanResolver

Simple renumbering of stage ids

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StageIDsRearranger.TaskTraverse

Constructor Summary

Constructors

Constructor and Description
StageIDsRearranger()

Method Summary

Methods

Modifier and Type	Method and Description
static List<Task>	getExplainOrder(HiveConf conf, List<Task<?>> tasks)
static List<Task>	getFetchSources(List<Task<?>> tasks)
PhysicalContext	resolve(PhysicalContext pctx) All physical plan resolvers have to implement this entry method.

Methods inherited from class java.lang.Object

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

Constructor Detail

StageIDsRearranger

public StageIDsRearranger()

Method Detail

resolve

public PhysicalContext resolve(PhysicalContext pctx)
                        throws SemanticException

Description copied from interface: PhysicalPlanResolver

All physical plan resolvers have to implement this entry method.

Specified by:

resolve in interface PhysicalPlanResolver

Returns:

the physical plan

Throws:

SemanticException

getFetchSources

public static List<Task> getFetchSources(List<Task<?>> tasks)

getExplainOrder

public static List<Task> getExplainOrder(HiveConf conf,
                         List<Task<?>> tasks)