Package org.apache.hadoop.hbase.io

Class MetricsIO

java.lang.Object

org.apache.hadoop.hbase.io.MetricsIO

@Private
public class MetricsIO
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static MetricsIO	instance
private final MetricsIOSource	source
private final MetricsIOWrapper	wrapper

Constructor Summary

Constructors

Constructor	Description
MetricsIO(MetricsIOSource source, MetricsIOWrapper wrapper)
MetricsIO(MetricsIOWrapper wrapper)

Method Summary

Modifier and Type	Method	Description
static MetricsIO	getInstance()	Get a static instance for the MetricsIO so that accessors access the same instance.
MetricsIOSource	getMetricsSource()
MetricsIOWrapper	getWrapper()
void	incrSlowFsRead()
void	updateFsPreadTime(long t)
void	updateFsReadTime(long t)
void	updateFsWriteTime(long t)

Methods inherited from class java.lang.Object

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

Field Details

instance

private static volatile MetricsIO instance

source

private final MetricsIOSource source

wrapper

private final MetricsIOWrapper wrapper

Constructor Details

MetricsIO

MetricsIO(MetricsIOWrapper wrapper)

MetricsIO

MetricsIO(MetricsIOSource source,
 MetricsIOWrapper wrapper)

Method Details

getInstance

public static MetricsIO getInstance()

Get a static instance for the MetricsIO so that accessors access the same instance. We want to lazy initialize so that correct process name is in place. See HBASE-27966 for more details.

getMetricsSource

public MetricsIOSource getMetricsSource()

getWrapper

public MetricsIOWrapper getWrapper()

updateFsReadTime

public void updateFsReadTime(long t)

updateFsPreadTime

public void updateFsPreadTime(long t)

updateFsWriteTime

public void updateFsWriteTime(long t)

incrSlowFsRead

public void incrSlowFsRead()