org.apache.hadoop.hdfs.server.blockmanagement

Class NumberReplicas

java.lang.Object

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

public class NumberReplicas
extends Object

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

Method Summary

Methods

Modifier and Type	Method and Description
int	corruptReplicas()
int	decommissioned()
int	decommissionedAndDecommissioning()
int	decommissionedReplicas() Deprecated.
int	decommissioning()
int	excessReplicas()
int	liveReplicas()
int	readOnlyReplicas()
int	replicasOnStaleNodes()

Methods inherited from class java.lang.Object

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

Method Detail

liveReplicas

public int liveReplicas()

readOnlyReplicas

public int readOnlyReplicas()

decommissionedReplicas

@Deprecated
public int decommissionedReplicas()

Deprecated.

Returns:

decommissioned replicas + decommissioning replicas It is deprecated by decommissionedAndDecommissioning due to its misleading name.

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".