Package org.apache.hadoop.hdfs.server.common

Enum Class HdfsServerConstants.ReplicaState

java.lang.Object

java.lang.Enum<HdfsServerConstants.ReplicaState>

org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState

All Implemented Interfaces:

Serializable, Comparable<HdfsServerConstants.ReplicaState>, Constable

Enclosing interface:

org.apache.hadoop.hdfs.server.common.HdfsServerConstants

public static enum HdfsServerConstants.ReplicaState
extends Enum<HdfsServerConstants.ReplicaState>

Block replica states, which it can go through while being constructed.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
FINALIZED	Replica is finalized.
RBW	Replica is being written to.
RUR	Replica is under recovery.
RWR	Replica is waiting to be recovered.
TEMPORARY	Temporary replica: created for replication and relocation only.

Method Summary

Modifier and Type	Method	Description
static HdfsServerConstants.ReplicaState	getState(int v)	Retrieve ReplicaState corresponding to given index.
int	getValue()
static HdfsServerConstants.ReplicaState	read(DataInput in)	Retrieve ReplicaState corresponding to index provided in binary stream.
static HdfsServerConstants.ReplicaState	valueOf(String name)	Returns the enum constant of this class with the specified name.
static HdfsServerConstants.ReplicaState[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.
void	write(DataOutput out)	Write to out

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

FINALIZED

public static final HdfsServerConstants.ReplicaState FINALIZED

Replica is finalized. The state when replica is not modified.

RBW

public static final HdfsServerConstants.ReplicaState RBW

Replica is being written to.

RWR

public static final HdfsServerConstants.ReplicaState RWR

Replica is waiting to be recovered.

RUR

public static final HdfsServerConstants.ReplicaState RUR

Replica is under recovery.

TEMPORARY

public static final HdfsServerConstants.ReplicaState TEMPORARY

Temporary replica: created for replication and relocation only.

Method Details

values

public static HdfsServerConstants.ReplicaState[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static HdfsServerConstants.ReplicaState valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

getValue

public int getValue()

getState

public static HdfsServerConstants.ReplicaState getState(int v)

Retrieve ReplicaState corresponding to given index.

Parameters:

v - Index to retrieve HdfsServerConstants.ReplicaState.

Returns:

HdfsServerConstants.ReplicaState object.

Throws:

IndexOutOfBoundsException - if the index is invalid.

read

public static HdfsServerConstants.ReplicaState read(DataInput in)
                                             throws IOException

Retrieve ReplicaState corresponding to index provided in binary stream.

Parameters:

in - Index value provided as bytes in given binary stream.

Returns:

HdfsServerConstants.ReplicaState object.

Throws:

IOException - if an I/O error occurs while reading bytes.

IndexOutOfBoundsException - if the index is invalid.

write

public void write(DataOutput out)
           throws IOException

Write to out

Throws:

IOException