org.apache.spark.sql.columnar

Class NoopColumnStats

Object

org.apache.spark.sql.columnar.NoopColumnStats

All Implemented Interfaces:

java.io.Serializable, ColumnStats

public class NoopColumnStats
extends Object
implements ColumnStats

A no-op ColumnStats only used for testing purposes.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NoopColumnStats()

Method Summary

Methods

Modifier and Type	Method and Description
Row	collectedStatistics() Column statistics represented as a single row, currently including closed lower bound, closed upper bound and null count.
void	gatherStats(Row row, int ordinal) Gathers statistics information from row(ordinal).

Methods inherited from class Object

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

Methods inherited from interface org.apache.spark.sql.columnar.ColumnStats

count, nullCount, sizeInBytes

Constructor Detail

NoopColumnStats

public NoopColumnStats()

Method Detail

gatherStats

public void gatherStats(Row row,
               int ordinal)

Description copied from interface: ColumnStats

Gathers statistics information from row(ordinal).

Specified by:

gatherStats in interface ColumnStats

collectedStatistics

public Row collectedStatistics()

Description copied from interface: ColumnStats

Column statistics represented as a single row, currently including closed lower bound, closed upper bound and null count.

Specified by:

collectedStatistics in interface ColumnStats