Package org.apache.hadoop.hdfs.protocol.datatransfer

Enum ReplaceDatanodeOnFailure.Policy

java.lang.Object

java.lang.Enum<ReplaceDatanodeOnFailure.Policy>

org.apache.hadoop.hdfs.protocol.datatransfer.ReplaceDatanodeOnFailure.Policy

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<ReplaceDatanodeOnFailure.Policy>

Enclosing class:

ReplaceDatanodeOnFailure

public static enum ReplaceDatanodeOnFailure.Policy
extends java.lang.Enum<ReplaceDatanodeOnFailure.Policy>

The replacement policies

Enum Constant Summary

Enum Constants

Enum Constant	Description
ALWAYS	Always add a new datanode when an existing datanode is removed.
DEFAULT
DISABLE	The feature is disabled in the entire site.
NEVER	Never add a new datanode.

Method Summary

Modifier and Type	Method	Description
static ReplaceDatanodeOnFailure.Policy	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static ReplaceDatanodeOnFailure.Policy[]	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

DISABLE

public static final ReplaceDatanodeOnFailure.Policy DISABLE

The feature is disabled in the entire site.

NEVER

public static final ReplaceDatanodeOnFailure.Policy NEVER

Never add a new datanode.

DEFAULT

public static final ReplaceDatanodeOnFailure.Policy DEFAULT

See Also:

ReplaceDatanodeOnFailure.CONDITION_DEFAULT

ALWAYS

public static final ReplaceDatanodeOnFailure.Policy ALWAYS

Always add a new datanode when an existing datanode is removed.

Method Detail

values

public static ReplaceDatanodeOnFailure.Policy[] 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 (ReplaceDatanodeOnFailure.Policy c : ReplaceDatanodeOnFailure.Policy.values())
    System.out.println(c);

Returns:

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

valueOf

public static ReplaceDatanodeOnFailure.Policy valueOf(java.lang.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:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null