org.apache.spark.sql.execution.joins

Class LeftSemiJoinHash

Object

org.apache.spark.sql.catalyst.trees.TreeNode<PlanType>

org.apache.spark.sql.catalyst.plans.QueryPlan<SparkPlan>

org.apache.spark.sql.execution.SparkPlan

org.apache.spark.sql.execution.joins.LeftSemiJoinHash

All Implemented Interfaces:

java.io.Serializable, Logging, org.apache.spark.sql.catalyst.trees.BinaryNode<SparkPlan>, HashJoin, scala.Equals, scala.Product

public class LeftSemiJoinHash
extends SparkPlan
implements BinaryNode, HashJoin, scala.Product, scala.Serializable

:: DeveloperApi :: Build the right table's join keys into a HashSet, and iteratively go through the left table, to find the if join keys are in the Hash set.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LeftSemiJoinHash(scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> leftKeys, scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> rightKeys, SparkPlan left, SparkPlan right)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.spark.sql.execution.joins.BuildRight$	buildSide()
RDD<org.apache.spark.sql.catalyst.expressions.Row>	execute() Runs this query returning the result as an RDD.
SparkPlan	left()
scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression>	leftKeys()
scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Attribute>	output()
scala.collection.immutable.List<org.apache.spark.sql.catalyst.plans.physical.ClusteredDistribution>	requiredChildDistribution()
SparkPlan	right()
scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression>	rightKeys()

Methods inherited from class org.apache.spark.sql.execution.SparkPlan

codegenEnabled, executeCollect, makeCopy, outputPartitioning

Methods inherited from class org.apache.spark.sql.catalyst.plans.QueryPlan

expressions, inputSet, missingInput, org$apache$spark$sql$catalyst$plans$QueryPlan$$transformExpressionDown$1, org$apache$spark$sql$catalyst$plans$QueryPlan$$transformExpressionUp$1, outputSet, printSchema, references, schema, schemaString, simpleString, statePrefix, transformAllExpressions, transformExpressions, transformExpressionsDown, transformExpressionsUp

Methods inherited from class org.apache.spark.sql.catalyst.trees.TreeNode

apply, argString, asCode, children, collect, fastEquals, flatMap, foreach, generateTreeString, getNodeNumbered, map, mapChildren, nodeName, numberedTreeString, otherCopyArgs, stringArgs, toString, transform, transformChildrenDown, transformChildrenUp, transformDown, transformUp, treeString, withNewChildren

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.spark.sql.catalyst.trees.BinaryNode

children

Methods inherited from interface org.apache.spark.sql.execution.joins.HashJoin

buildKeys, buildPlan, buildSideKeyGenerator, hashJoin, streamedKeys, streamedPlan, streamSideKeyGenerator

Methods inherited from interface scala.Product

productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Methods inherited from interface org.apache.spark.Logging

initializeIfNecessary, initializeLogging, isTraceEnabled, log_, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning

Constructor Detail

LeftSemiJoinHash

public LeftSemiJoinHash(scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> leftKeys,
                scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> rightKeys,
                SparkPlan left,
                SparkPlan right)

Method Detail

leftKeys

public scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> leftKeys()

Specified by:

leftKeys in interface HashJoin

rightKeys

public scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Expression> rightKeys()

Specified by:

rightKeys in interface HashJoin

left

public SparkPlan left()

Specified by:

left in interface org.apache.spark.sql.catalyst.trees.BinaryNode<SparkPlan>

Specified by:

left in interface HashJoin

right

public SparkPlan right()

Specified by:

right in interface org.apache.spark.sql.catalyst.trees.BinaryNode<SparkPlan>

Specified by:

right in interface HashJoin

buildSide

public org.apache.spark.sql.execution.joins.BuildRight$ buildSide()

Specified by:

buildSide in interface HashJoin

requiredChildDistribution

public scala.collection.immutable.List<org.apache.spark.sql.catalyst.plans.physical.ClusteredDistribution> requiredChildDistribution()

output

public scala.collection.Seq<org.apache.spark.sql.catalyst.expressions.Attribute> output()

Specified by:

output in interface HashJoin

Specified by:

output in class org.apache.spark.sql.catalyst.plans.QueryPlan<SparkPlan>

execute

public RDD<org.apache.spark.sql.catalyst.expressions.Row> execute()

Description copied from class: SparkPlan

Runs this query returning the result as an RDD.

Specified by:

execute in class SparkPlan