Package org.apache.hadoop.hdfs.server.blockmanagement

Class NumberReplicas

java.lang.Object

org.apache.hadoop.hdfs.util.EnumCounters<NumberReplicas.StoredReplicaState>

org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

public class NumberReplicas
extends EnumCounters<NumberReplicas.StoredReplicaState>

A immutable object that stores the number of live replicas and the number of decommissioned Replicas.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	NumberReplicas.StoredReplicaState

Constructor Summary

Constructors

Constructor	Description
NumberReplicas()

Method Summary

Modifier and Type	Method	Description
int	corruptReplicas()
int	decommissioned()
int	decommissionedAndDecommissioning()
int	decommissioning()
int	excessReplicas()
int	liveEnteringMaintenanceReplicas()
int	liveReplicas()
int	maintenanceNotForReadReplicas()
int	maintenanceReplicas()
int	outOfServiceReplicas()
int	readOnlyReplicas()
int	redundantInternalBlocks()
int	replicasOnStaleNodes()

Methods inherited from class org.apache.hadoop.hdfs.util.EnumCounters

add, add, allLessOrEqual, anyGreaterOrEqual, asArray, deepCopyEnumCounter, equals, get, hashCode, negation, reset, reset, set, set, subtract, subtract, sum, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

NumberReplicas

public NumberReplicas()

Method Details

liveReplicas

public int liveReplicas()

readOnlyReplicas

public int readOnlyReplicas()

decommissionedAndDecommissioning

public int decommissionedAndDecommissioning()

Returns:

decommissioned and decommissioning replicas

decommissioned

public int decommissioned()

Returns:

decommissioned replicas only

decommissioning

public int decommissioning()

Returns:

decommissioning replicas only

corruptReplicas

public int corruptReplicas()

excessReplicas

public int excessReplicas()

replicasOnStaleNodes

public int replicasOnStaleNodes()

Returns:

the number of replicas which are on stale nodes. This is not mutually exclusive with the other counts -- ie a replica may count as both "live" and "stale".

redundantInternalBlocks

public int redundantInternalBlocks()

maintenanceNotForReadReplicas

public int maintenanceNotForReadReplicas()

maintenanceReplicas

public int maintenanceReplicas()

outOfServiceReplicas

public int outOfServiceReplicas()

liveEnteringMaintenanceReplicas

public int liveEnteringMaintenanceReplicas()