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

java.lang.Object
  java.lang.Enum<HdfsServerConstants.RollingUpgradeStartupOption>
      org.apache.hadoop.hdfs.server.common.HdfsServerConstants.RollingUpgradeStartupOption

All Implemented Interfaces:

Serializable, Comparable<HdfsServerConstants.RollingUpgradeStartupOption>

Enclosing class:

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

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

Startup options for rolling upgrade.

Enum Constant Summary

DOWNGRADE

ROLLBACK

STARTED

Method Summary

String	getOptionString()
boolean	matches(HdfsServerConstants.StartupOption option)
static HdfsServerConstants.RollingUpgradeStartupOption	valueOf(String name) Returns the enum constant of this type with the specified name.
static HdfsServerConstants.RollingUpgradeStartupOption[]	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

ROLLBACK

public static final HdfsServerConstants.RollingUpgradeStartupOption ROLLBACK

DOWNGRADE

public static final HdfsServerConstants.RollingUpgradeStartupOption DOWNGRADE

STARTED

public static final HdfsServerConstants.RollingUpgradeStartupOption STARTED

Method Detail

values

public static HdfsServerConstants.RollingUpgradeStartupOption[] 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 (HdfsServerConstants.RollingUpgradeStartupOption c : HdfsServerConstants.RollingUpgradeStartupOption.values())
    System.out.println(c);

Returns:

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

valueOf

public static HdfsServerConstants.RollingUpgradeStartupOption 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

getOptionString

public String getOptionString()

matches

public boolean matches(HdfsServerConstants.StartupOption option)