Package org.apache.hadoop.hdfs.server.namenode.startupprogress

Enum Phase

java.lang.Object

java.lang.Enum<Phase>

org.apache.hadoop.hdfs.server.namenode.startupprogress.Phase

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Phase>

@Private
public enum Phase
extends java.lang.Enum<Phase>

Indicates a particular phase of the namenode startup sequence. The phases are listed here in their execution order.

Enum Constant Summary

Enum Constants

Enum Constant	Description
LOADING_EDITS	The namenode is loading the edits file and applying its operations to the in-memory metadata.
LOADING_FSIMAGE	The namenode is loading the fsimage file into memory.
SAFEMODE	The namenode has entered safemode, awaiting block reports from data nodes.
SAVING_CHECKPOINT	The namenode is saving a new checkpoint.

Method Summary

Modifier and Type	Method	Description
java.lang.String	getDescription()	Returns phase description.
java.lang.String	getName()	Returns phase name.
static Phase	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static Phase[]	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

LOADING_FSIMAGE

public static final Phase LOADING_FSIMAGE

The namenode is loading the fsimage file into memory.

LOADING_EDITS

public static final Phase LOADING_EDITS

The namenode is loading the edits file and applying its operations to the in-memory metadata.

SAVING_CHECKPOINT

public static final Phase SAVING_CHECKPOINT

The namenode is saving a new checkpoint.

SAFEMODE

public static final Phase SAFEMODE

The namenode has entered safemode, awaiting block reports from data nodes.

Method Detail

values

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

Returns:

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

valueOf

public static Phase 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

getDescription

public java.lang.String getDescription()

Returns phase description.

Returns:

String description

getName

public java.lang.String getName()

Returns phase name.

Returns:

String phase name