Package com.linkedin.venice.utils.collections

Class MeasurableLinkedHashMap<K,V extends Measurable>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

com.linkedin.venice.utils.collections.MeasurableLinkedHashMap<K,V>

All Implemented Interfaces:

Measurable, Serializable, Cloneable, Map<K,V>

public class MeasurableLinkedHashMap<K,V extends Measurable>
extends LinkedHashMap<K,V>
implements Measurable

A subclass of LinkedHashMap which does a best-effort attempt at guessing its size on heap + the size of its values. Several assumptions are made which could make this imprecise in some contexts. See the usage in PubSubMessageHeaders for the usage it was originally intended for...

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
MeasurableLinkedHashMap()

Method Summary

Modifier and Type	Method	Description
int	getHeapSize()

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Constructor Details

MeasurableLinkedHashMap

public MeasurableLinkedHashMap()

Method Details

getHeapSize

public int getHeapSize()

Specified by:

getHeapSize in interface Measurable