org.apache.solr.common.cloud

枚举 Replica.State

java.lang.Object

java.lang.Enum<Replica.State>

org.apache.solr.common.cloud.Replica.State

所有已实现的接口:

Serializable, Comparable<Replica.State>

封闭类:

Replica

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

The replica's state. In general, if the node the replica is hosted on is not under /live_nodes in ZK, the replica's state should be discarded.

枚举常量概要

枚举常量

枚举常量和说明
ACTIVE The replica is ready to receive updates and queries.
DOWN The first state before RECOVERING.
RECOVERING The node is recovering from the leader.
RECOVERY_FAILED Recovery attempts have not worked, something is not right.

字段概要

字段

限定符和类型	字段和说明
String	shortName short name for a state.

方法概要

限定符和类型	方法和说明
static Replica.State	getState(String stateStr) Converts the state string to a State instance.
String	toString()
static Replica.State	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static Replica.State[]	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, 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

ACTIVE

public static final Replica.State ACTIVE

The replica is ready to receive updates and queries.

NOTE: when the node the replica is hosted on crashes, the replica's state may remain ACTIVE in ZK. To determine if the replica is truly active, you must also verify that its node is under /live_nodes in ZK (or use ClusterState.liveNodesContain(String)).

DOWN

public static final Replica.State DOWN

The first state before RECOVERING. A node in this state should be actively trying to move to RECOVERING.

NOTE: a replica's state may appear DOWN in ZK also when the node it's hosted on gracefully shuts down. This is a best effort though, and should not be relied on.

RECOVERING

public static final Replica.State RECOVERING

The node is recovering from the leader. This might involve peer-sync, full replication or finding out things are already in sync.

RECOVERY_FAILED

public static final Replica.State RECOVERY_FAILED

Recovery attempts have not worked, something is not right.

NOTE: This state doesn't matter if the node is not part of /live_nodes in ZK; in that case the node is not part of the cluster and it's state should be discarded.

字段详细资料

shortName

public final String shortName

short name for a state. Used to encode this in the state node see PerReplicaStates.State

方法详细资料

values

public static Replica.State[] 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 (Replica.State c : Replica.State.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 Replica.State 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

toString

public String toString()

覆盖:

toString 在类中 Enum<Replica.State>

getState

public static Replica.State getState(String stateStr)

Converts the state string to a State instance.