org.apache.paimon.stats

Class SimpleStats

java.lang.Object

org.apache.paimon.stats.SimpleStats

@Public
public class SimpleStats
extends Object

The statistics for columns, supports the following stats.

• minValues: the minimum values of the columns
• maxValues: the maximum values of the columns
• nullCounts: the number of nulls of the columns

All statistics are stored in the form of a Binary, which can significantly reduce its memory consumption, but the cost is that the column type needs to be known when getting.

Since:

0.9.0

Field Summary

Fields

Modifier and Type	Field and Description
static SimpleStats	EMPTY_STATS Empty stats for 0 column number.
static RowType	SCHEMA

Constructor Summary

Constructors

Constructor and Description
SimpleStats(BinaryRow minValues, BinaryRow maxValues, BinaryArray nullCounts)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
static SimpleStats	fromRow(InternalRow row)
int	hashCode()
BinaryRow	maxValues()
BinaryRow	minValues()
BinaryArray	nullCounts()
InternalRow	toRow()

Methods inherited from class java.lang.Object

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

Field Detail

SCHEMA

public static final RowType SCHEMA

EMPTY_STATS

public static final SimpleStats EMPTY_STATS

Empty stats for 0 column number.

Constructor Detail

SimpleStats

public SimpleStats(BinaryRow minValues,
                   BinaryRow maxValues,
                   BinaryArray nullCounts)

Method Detail

minValues

public BinaryRow minValues()

maxValues

public BinaryRow maxValues()

nullCounts

public BinaryArray nullCounts()

toRow

public InternalRow toRow()

fromRow

public static SimpleStats fromRow(InternalRow row)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object