org.apache.hadoop.hive.ql.optimizer

Class SkewJoinOptimizer

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.Transform

org.apache.hadoop.hive.ql.optimizer.SkewJoinOptimizer

public class SkewJoinOptimizer
extends Transform

SkewJoinOptimizer.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SkewJoinOptimizer.SkewJoinOptProcCtx SkewJoinOptProcCtx.
static class	SkewJoinOptimizer.SkewJoinProc

Constructor Summary

Constructors

Constructor and Description
SkewJoinOptimizer()

Method Summary

Modifier and Type	Method and Description
ParseContext	transform(ParseContext pctx) All transformation steps implement this interface.

Methods inherited from class org.apache.hadoop.hive.ql.optimizer.Transform

beginPerfLogging, endPerfLogging, endPerfLogging

Methods inherited from class java.lang.Object

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

Constructor Detail

SkewJoinOptimizer

public SkewJoinOptimizer()

Method Detail

transform

public ParseContext transform(ParseContext pctx)
                       throws SemanticException

Description copied from class: Transform

All transformation steps implement this interface.

Specified by:

transform in class Transform

Parameters:

pctx - input parse context

Returns:

ParseContext

Throws:

SemanticException