org.apache.iceberg

Class FloatFieldMetrics

java.lang.Object

org.apache.iceberg.FieldMetrics

org.apache.iceberg.FloatFieldMetrics

public class FloatFieldMetrics
extends FieldMetrics

Iceberg internally tracked field level metrics, used by Parquet and ORC writers only.

Parquet/ORC keeps track of most metrics in file statistics, and only NaN counter is actually tracked by writers. This wrapper ensures that metrics not being updated by those writers will not be incorrectly used, by throwing exceptions when they are accessed.

Constructor Summary

Constructors

Constructor and Description
FloatFieldMetrics(int id, long nanValueCount) Constructor for creating a FieldMetrics with only NaN counter.

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	lowerBound() Returns the lower bound value of this field.
long	nullValueCount() Returns the number of null values for this field.
java.nio.ByteBuffer	upperBound() Returns the upper bound value of this field.
long	valueCount() Returns the number of all values, including nulls, NaN and repeated, for the given field.

Methods inherited from class org.apache.iceberg.FieldMetrics

id, nanValueCount

Methods inherited from class java.lang.Object

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

Constructor Detail

FloatFieldMetrics

public FloatFieldMetrics(int id,
                         long nanValueCount)

Constructor for creating a FieldMetrics with only NaN counter.

Parameters:

id - field id being tracked by the writer

nanValueCount - number of NaN values, will only be non-0 for double or float field.

Method Detail

valueCount

public long valueCount()

Description copied from class: FieldMetrics

Returns the number of all values, including nulls, NaN and repeated, for the given field.

Overrides:

valueCount in class FieldMetrics

nullValueCount

public long nullValueCount()

Description copied from class: FieldMetrics

Returns the number of null values for this field.

Overrides:

nullValueCount in class FieldMetrics

lowerBound

public java.nio.ByteBuffer lowerBound()

Description copied from class: FieldMetrics

Returns the lower bound value of this field.

Overrides:

lowerBound in class FieldMetrics

upperBound

public java.nio.ByteBuffer upperBound()

Description copied from class: FieldMetrics

Returns the upper bound value of this field.

Overrides:

upperBound in class FieldMetrics