Package org.apache.hadoop.metrics2.util

Class Metrics2Util.TopN

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.PriorityQueue<Metrics2Util.NameValuePair>

org.apache.hadoop.metrics2.util.Metrics2Util.TopN

All Implemented Interfaces:

Serializable, Iterable<Metrics2Util.NameValuePair>, Collection<Metrics2Util.NameValuePair>, Queue<Metrics2Util.NameValuePair>

Enclosing class:

Metrics2Util

@Private
public static class Metrics2Util.TopN
extends PriorityQueue<Metrics2Util.NameValuePair>

A fixed-size priority queue, used to retrieve top-n of offered entries.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
TopN(int n)

Method Summary

Modifier and Type	Method	Description
long	getTotal()
boolean	offer(Metrics2Util.NameValuePair entry)

Methods inherited from class java.util.PriorityQueue

add, clear, comparator, contains, forEach, iterator, peek, poll, remove, removeAll, removeIf, retainAll, size, spliterator, toArray, toArray

Methods inherited from class java.util.AbstractQueue

addAll, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

containsAll, equals, hashCode, isEmpty, parallelStream, stream, toArray

Constructor Details

TopN

public TopN(int n)

Method Details

offer

public boolean offer(Metrics2Util.NameValuePair entry)

Specified by:

offer in interface Queue<Metrics2Util.NameValuePair>

Overrides:

offer in class PriorityQueue<Metrics2Util.NameValuePair>

getTotal

public long getTotal()