Package org.apache.hadoop.hdfs.server.federation.metrics

Class StateStoreMetrics

java.lang.Object

org.apache.hadoop.hdfs.server.federation.metrics.StateStoreMetrics

All Implemented Interfaces:

StateStoreMBean

Direct Known Subclasses:

NullStateStoreMetrics

@Metrics(name="StateStoreActivity",
         about="Router metrics",
         context="dfs")
public class StateStoreMetrics
extends java.lang.Object
implements StateStoreMBean

Implementations of the JMX interface for the State Store metrics.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StateStoreMetrics()

Method Summary

Modifier and Type	Method	Description
void	addFailure(long latency)
void	addRead(long latency)
void	addRemove(long latency)
void	addWrite(long latency)
static StateStoreMetrics	create(org.apache.hadoop.conf.Configuration conf)
java.util.Map<java.lang.String,org.apache.hadoop.metrics2.lib.MutableRate>	getCacheLoadMetrics()	Retrieve unmodifiable map of cache loading metrics.
double	getFailureAvg()
long	getFailureOps()
double	getReadAvg()
long	getReadOps()
double	getRemoveAvg()
long	getRemoveOps()
double	getWriteAvg()
long	getWriteOps()
void	reset()
void	setCacheLoading(java.lang.String name, long value)	Set the cache loading metrics for the state store interface.
void	setCacheSize(java.lang.String name, int size)	Set the size of the cache for a State Store interface.
void	setLocationCache(java.lang.String name, long count)	set the count of the location cache access information.
void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Detail

StateStoreMetrics

protected StateStoreMetrics()

Method Detail

create

public static StateStoreMetrics create(org.apache.hadoop.conf.Configuration conf)

shutdown

public void shutdown()

addRead

public void addRead(long latency)

getReadOps

public long getReadOps()

Specified by:

getReadOps in interface StateStoreMBean

getReadAvg

public double getReadAvg()

Specified by:

getReadAvg in interface StateStoreMBean

addWrite

public void addWrite(long latency)

getWriteOps

public long getWriteOps()

Specified by:

getWriteOps in interface StateStoreMBean

getWriteAvg

public double getWriteAvg()

Specified by:

getWriteAvg in interface StateStoreMBean

addFailure

public void addFailure(long latency)

getFailureOps

public long getFailureOps()

Specified by:

getFailureOps in interface StateStoreMBean

getFailureAvg

public double getFailureAvg()

Specified by:

getFailureAvg in interface StateStoreMBean

addRemove

public void addRemove(long latency)

getRemoveOps

public long getRemoveOps()

Specified by:

getRemoveOps in interface StateStoreMBean

getRemoveAvg

public double getRemoveAvg()

Specified by:

getRemoveAvg in interface StateStoreMBean

setCacheSize

public void setCacheSize(java.lang.String name,
                         int size)

Set the size of the cache for a State Store interface.

Parameters:

name - Name of the record to cache.

size - Number of records.

setLocationCache

public void setLocationCache(java.lang.String name,
                             long count)

set the count of the location cache access information.

Parameters:

name - Name of the record.

count - count of the record.

setCacheLoading

public void setCacheLoading(java.lang.String name,
                            long value)

Set the cache loading metrics for the state store interface.

Parameters:

name - Name of the record of the cache.

value - The time duration interval as the cache value.

getCacheLoadMetrics

@VisibleForTesting
public java.util.Map<java.lang.String,org.apache.hadoop.metrics2.lib.MutableRate> getCacheLoadMetrics()

Retrieve unmodifiable map of cache loading metrics.

Returns:

unmodifiable map of cache loading metrics.

reset

@VisibleForTesting
public void reset()