org.apache.spark.sql.sources

Class PrunedScan

Object

org.apache.spark.sql.sources.BaseRelation

org.apache.spark.sql.sources.PrunedScan

public abstract class PrunedScan
extends BaseRelation

::DeveloperApi:: A BaseRelation that can eliminate unneeded columns before producing an RDD containing all of its tuples as Row objects.

Constructor Summary

Constructors

Constructor and Description
PrunedScan()

Method Summary

Methods

Modifier and Type	Method and Description
abstract RDD<org.apache.spark.sql.catalyst.expressions.Row>	buildScan(String[] requiredColumns)

Methods inherited from class org.apache.spark.sql.sources.BaseRelation

schema, sizeInBytes, sqlContext

Methods inherited from class Object

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

Constructor Detail

PrunedScan

public PrunedScan()

Method Detail

buildScan

public abstract RDD<org.apache.spark.sql.catalyst.expressions.Row> buildScan(String[] requiredColumns)