Package org.apache.solr.common.cloud

Enum Replica.Type

java.lang.Object

java.lang.Enum<Replica.Type>

org.apache.solr.common.cloud.Replica.Type

All Implemented Interfaces:

Serializable, Comparable<Replica.Type>

Enclosing class:

Replica

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

Enum Constant Summary

Enum Constants

Enum Constant	Description
NRT	Writes updates to transaction log and indexes locally.
PULL	Doesn’t index or writes to transaction log.
TLOG	Writes to transaction log, but not to index, uses replication.

Method Summary

Modifier and Type	Method	Description
static Replica.Type	get(String name)
static Replica.Type	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Replica.Type[]	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

NRT

public static final Replica.Type NRT

Writes updates to transaction log and indexes locally. Replicas of type NRT support NRT (soft commits) and RTG. Any NRT replica can become a leader. A shard leader will forward updates to all active NRT and TLOG replicas.

TLOG

public static final Replica.Type TLOG

Writes to transaction log, but not to index, uses replication. Any TLOG replica can become leader (by first applying all local transaction log elements). If a replica is of type TLOG but is also the leader, it will behave as a NRT. A shard leader will forward updates to all active NRT and TLOG replicas.

PULL

public static final Replica.Type PULL

Doesn’t index or writes to transaction log. Just replicates from NRT or TLOG replicas. PULL replicas can’t become shard leaders (i.e., if there are only pull replicas in the collection at some point, updates will fail same as if there is no leaders, queries continue to work), so they don’t even participate in elections.

Method Detail

values

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

Returns:

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

valueOf

public static Replica.Type 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

get

public static Replica.Type get(String name)