org.apache.hadoop.metrics2.util

类 MetricsCache

java.lang.Object

org.apache.hadoop.metrics2.util.MetricsCache

public class MetricsCache
extends Object

A metrics cache for sinks that don't support sparse updates.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	MetricsCache.Record Cached record

构造器概要

构造器

构造器和说明
MetricsCache()

方法概要

方法

限定符和类型	方法和说明
MetricsCache.Record	get(String name, Collection<MetricsTag> tags) Get the cached record
MetricsCache.Record	update(MetricsRecord mr)
MetricsCache.Record	update(MetricsRecord mr, boolean includingTags) Update the cache and return the cached record

从类继承的方法 java.lang.Object

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

构造器详细资料

MetricsCache

public MetricsCache()

方法详细资料

update

public MetricsCache.Record update(MetricsRecord mr,
                         boolean includingTags)

Update the cache and return the cached record

参数:

mr - the update record

includingTags - cache tag values (for later lookup by name) if true

返回:

the updated cached record

update

public MetricsCache.Record update(MetricsRecord mr)

get

public MetricsCache.Record get(String name,
                      Collection<MetricsTag> tags)

Get the cached record

参数:

name - of the record

tags - of the record

返回:

the cached record or null