org.apache.hadoop.hdfs.server.protocol
Enum DatanodeStorage.State

java.lang.Object
  java.lang.Enum<DatanodeStorage.State>
      org.apache.hadoop.hdfs.server.protocol.DatanodeStorage.State

All Implemented Interfaces:

Serializable, Comparable<DatanodeStorage.State>

Enclosing class:

DatanodeStorage

public static enum DatanodeStorage.State
extends Enum<DatanodeStorage.State>

The state of the storage.

Enum Constant Summary

NORMAL

READ_ONLY_SHARED
A storage that represents a read-only path to replicas stored on a shared storage device.

Method Summary

static DatanodeStorage.State	valueOf(String name) Returns the enum constant of this type with the specified name.
static DatanodeStorage.State[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NORMAL

public static final DatanodeStorage.State NORMAL

READ_ONLY_SHARED

public static final DatanodeStorage.State READ_ONLY_SHARED

A storage that represents a read-only path to replicas stored on a shared storage device. Replicas on READ_ONLY_SHARED storage are not counted towards live replicas.

In certain implementations, a READ_ONLY_SHARED storage may be correlated to its NORMAL counterpart using the DatanodeStorage.storageID. This property should be used for debugging purposes only.

Method Detail

values

public static DatanodeStorage.State[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DatanodeStorage.State c : DatanodeStorage.State.values())
    System.out.println(c);

Returns:

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

valueOf

public static DatanodeStorage.State valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null