Package org.apache.hadoop.yarn.server.federation.store.metrics

Class FederationStateStoreClientMetrics

java.lang.Object

org.apache.hadoop.yarn.server.federation.store.metrics.FederationStateStoreClientMetrics

All Implemented Interfaces:

org.apache.hadoop.metrics2.MetricsSource

@Private
@Unstable
@Metrics(about="Performance and usage metrics for Federation StateStore",
         context="fedr")
public final class FederationStateStoreClientMetrics
extends java.lang.Object
implements org.apache.hadoop.metrics2.MetricsSource

Performance metrics for FederationStateStore implementations.

Field Summary

Fields

Modifier and Type	Field	Description
static org.slf4j.Logger	LOG

Method Summary

Modifier and Type	Method	Description
static void	decrConnections()
static void	failedStateStoreCall()
static FederationStateStoreClientMetrics	getInstance()
void	getMetrics(org.apache.hadoop.metrics2.MetricsCollector collector, boolean all)
static int	getNumConnections()
static void	incrConnections()
static void	succeededStateStoreCall(long duration)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

Method Detail

getInstance

public static FederationStateStoreClientMetrics getInstance()

failedStateStoreCall

public static void failedStateStoreCall()

succeededStateStoreCall

public static void succeededStateStoreCall(long duration)

incrConnections

public static void incrConnections()

decrConnections

public static void decrConnections()

getMetrics

public void getMetrics(org.apache.hadoop.metrics2.MetricsCollector collector,
                       boolean all)

Specified by:

getMetrics in interface org.apache.hadoop.metrics2.MetricsSource

getNumConnections

@VisibleForTesting
public static int getNumConnections()