org.apache.hadoop.hive.ql.optimizer

Class FixedBucketPruningOptimizer

java.lang.Object

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

org.apache.hadoop.hive.ql.optimizer.FixedBucketPruningOptimizer

public class FixedBucketPruningOptimizer
extends Transform

Fixed bucket pruning optimizer goes through all the table scans and annotates them with a bucketing inclusion bit-set.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FixedBucketPruningOptimizer.BucketBitsetGenerator
class	FixedBucketPruningOptimizer.FixedBucketPartitionWalker
class	FixedBucketPruningOptimizer.FixedBucketPruningOptimizerCtxt
class	FixedBucketPruningOptimizer.NoopWalker

Constructor Summary

Constructors

Constructor and Description
FixedBucketPruningOptimizer(boolean compat)

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

FixedBucketPruningOptimizer

public FixedBucketPruningOptimizer(boolean compat)

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