org.apache.hadoop.hbase.master.assignment

枚举 ServerState

java.lang.Object

java.lang.Enum<ServerState>

org.apache.hadoop.hbase.master.assignment.ServerState

所有已实现的接口:

Serializable, Comparable<ServerState>

@InterfaceAudience.Private
public enum ServerState
extends Enum<ServerState>

Server State.

枚举常量概要

枚举常量

枚举常量和说明
CRASHED Indicate that the server has crashed, i.e., we have already scheduled a SCP for it.
OFFLINE WAL splitting done.
ONLINE Initial state.
SPLITTING Server expired/crashed.
SPLITTING_META Only server which carries meta can have this state.
SPLITTING_META_DONE Indicate that the meta splitting is done.

方法概要

限定符和类型	方法和说明
static ServerState	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static ServerState[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

ONLINE

public static final ServerState ONLINE

Initial state. Available.

CRASHED

public static final ServerState CRASHED

Indicate that the server has crashed, i.e., we have already scheduled a SCP for it.

SPLITTING_META

public static final ServerState SPLITTING_META

Only server which carries meta can have this state. We will split wal for meta and then assign meta first before splitting other wals.

SPLITTING_META_DONE

public static final ServerState SPLITTING_META_DONE

Indicate that the meta splitting is done. We need this state so that the UnassignProcedure for meta can safely quit. See the comments in UnassignProcedure.remoteCallFailed for more details.

SPLITTING

public static final ServerState SPLITTING

Server expired/crashed. Currently undergoing WAL splitting.

OFFLINE

public static final ServerState OFFLINE

WAL splitting done. This state will be used to tell the UnassignProcedure that it can safely quit. See the comments in UnassignProcedure.remoteCallFailed for more details.

方法详细资料

values

public static ServerState[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (ServerState c : ServerState.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static ServerState valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值