org.apache.hadoop.hive.ql.optimizer.spark

Class SparkSMBJoinHintOptimizer

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.AbstractBucketJoinProc

org.apache.hadoop.hive.ql.optimizer.AbstractSMBJoinProc

org.apache.hadoop.hive.ql.optimizer.spark.SparkSMBJoinHintOptimizer

All Implemented Interfaces:

NodeProcessor

public class SparkSMBJoinHintOptimizer
extends AbstractSMBJoinProc
implements NodeProcessor

Converts from a bucket-mapjoin created from hints to SMB mapjoin.

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.optimizer.AbstractBucketJoinProc

pGraphContext

Constructor Summary

Constructors

Constructor and Description
SparkSMBJoinHintOptimizer()
SparkSMBJoinHintOptimizer(ParseContext pctx)

Method Summary

Modifier and Type	Method and Description
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 org.apache.hadoop.hive.ql.optimizer.AbstractSMBJoinProc

canConvertBucketMapJoinToSMBJoin, canConvertJoinToBucketMapJoin, canConvertJoinToSMBJoin, checkConvertJoinToSMBJoin, convertBucketMapJoinToSMBJoin, convertJoinToBucketMapJoin, convertJoinToSMBJoin

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

canConvertMapJoinToBucketMapJoin, checkConvertBucketMapJoin, convertMapJoinToBucketMapJoin, getBucketFilePathsOfPartition, toColumns

Methods inherited from class java.lang.Object

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

Constructor Detail

SparkSMBJoinHintOptimizer

public SparkSMBJoinHintOptimizer(ParseContext pctx)

SparkSMBJoinHintOptimizer

public SparkSMBJoinHintOptimizer()

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

Specified by:

process in class AbstractSMBJoinProc

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