Interns (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.metrics.Interns

@InterfaceAudience.Private
@InterfaceStability.Evolving
public final class Interns
extends Object

Helpers to create interned metrics info

Field Summary

Fields
Modifier and Type	Field and Description
`private static com.google.common.cache.LoadingCache<String,ConcurrentHashMap<String,org.apache.hadoop.metrics2.MetricsInfo>>`	`infoCache`
`private static com.google.common.cache.LoadingCache<org.apache.hadoop.metrics2.MetricsInfo,ConcurrentHashMap<String,org.apache.hadoop.metrics2.MetricsTag>>`	`tagCache`

Constructor Summary

Constructors
Modifier Constructor and Description

private Interns()

Constructors
Modifier	Constructor and Description
`private`	`Interns()`

Method Summary

Methods
Modifier and Type	Method and Description
`static org.apache.hadoop.metrics2.MetricsInfo`	`info(String name, String description)` Get a metric info object
`static org.apache.hadoop.metrics2.MetricsTag`	`tag(org.apache.hadoop.metrics2.MetricsInfo info, String value)` Get a metrics tag
`static org.apache.hadoop.metrics2.MetricsTag`	`tag(String name, String description, String value)` Get a metrics tag

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

infoCache

private static com.google.common.cache.LoadingCache<String,ConcurrentHashMap<String,org.apache.hadoop.metrics2.MetricsInfo>> infoCache

tagCache

private static com.google.common.cache.LoadingCache<org.apache.hadoop.metrics2.MetricsInfo,ConcurrentHashMap<String,org.apache.hadoop.metrics2.MetricsTag>> tagCache

Constructor Detail
- Interns
```
private Interns()
```

Method Detail

info

public static org.apache.hadoop.metrics2.MetricsInfo info(String name,
                                          String description)

Get a metric info object

Returns:: an interned metric info object

tag

public static org.apache.hadoop.metrics2.MetricsTag tag(org.apache.hadoop.metrics2.MetricsInfo info,
                                        String value)

Get a metrics tag

Parameters:: info - of the tag; value - of the tag
Returns:: an interned metrics tag

tag

public static org.apache.hadoop.metrics2.MetricsTag tag(String name,
                                        String description,
                                        String value)

Get a metrics tag

Parameters:: name - of the tag; description - of the tag; value - of the tag
Returns:: an interned metrics tag

Class Interns

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

infoCache

tagCache

Constructor Detail

Interns

Method Detail

info

tag

tag