JmxCacheBuster (Apache HBase 1.4.11 API)

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java.lang.Object
- org.apache.hadoop.metrics2.impl.JmxCacheBuster

```
@InterfaceAudience.Private
public class JmxCacheBuster
extends Object
```
JMX caches the beans that have been exported; even after the values are removed from hadoop's metrics system the keys and old values will still remain. This class stops and restarts the Hadoop metrics system, forcing JMX to clear the cache of exported metrics. This class need to be in the o.a.h.metrics2.impl namespace as many of the variables/calls used are package private.

Method Summary

Methods
Modifier and Type	Method and Description
`static void`	`clearJmxCache()` For JMX to forget about all previously exported metrics.
`static void`	`restart()` Restarts the stopped service.
`static void`	`stop()` Stops the clearing of JMX metrics and restarting the Hadoop metrics system.

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

- Method Detail
  - clearJmxCache
```
public static void clearJmxCache()
```
    For JMX to forget about all previously exported metrics.
  - stop
```
public static void stop()
```
    Stops the clearing of JMX metrics and restarting the Hadoop metrics system. This is needed for some test environments where we manually inject sources or sinks dynamically.
  - restart
```
public static void restart()
```
    Restarts the stopped service.
    
    See Also:
    stop()

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