Package org.apache.solr.common.cloud

Enum Slice.State

java.lang.Object

java.lang.Enum<Slice.State>

org.apache.solr.common.cloud.Slice.State

All Implemented Interfaces:

Serializable, Comparable<Slice.State>

Enclosing class:

Slice

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

The slice's state.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ACTIVE	The normal/default state of a shard.
CONSTRUCTION	When a shard is split, the new sub-shards are put in that state while the split operation is in progress.
INACTIVE	A shard is put in that state after it has been successfully split.
RECOVERY	Sub-shards of a split shard are put in that state, when they need to create replicas in order to meet the collection's replication factor.
RECOVERY_FAILED	Sub-shards of a split shard are put in that state when the split is deemed failed by the overseer even though all replicas are active because either the leader node is no longer live or has a different ephemeral owner (zk session id).

Method Summary

Modifier and Type	Method	Description
static Slice.State	getState(String stateStr)	Converts the state string to a State instance.
String	toString()
static Slice.State	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Slice.State[]	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, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ACTIVE

public static final Slice.State ACTIVE

The normal/default state of a shard.

INACTIVE

public static final Slice.State INACTIVE

A shard is put in that state after it has been successfully split. See the reference guide for more details.

CONSTRUCTION

public static final Slice.State CONSTRUCTION

When a shard is split, the new sub-shards are put in that state while the split operation is in progress. It's also used when the shard is undergoing data restoration. A shard in this state still receives update requests from the parent shard leader, however does not participate in distributed search.

RECOVERY

public static final Slice.State RECOVERY

Sub-shards of a split shard are put in that state, when they need to create replicas in order to meet the collection's replication factor. A shard in that state still receives update requests from the parent shard leader, however does not participate in distributed search.

RECOVERY_FAILED

public static final Slice.State RECOVERY_FAILED

Sub-shards of a split shard are put in that state when the split is deemed failed by the overseer even though all replicas are active because either the leader node is no longer live or has a different ephemeral owner (zk session id). Such conditions can potentially lead to data loss. See SOLR-9438 for details. A shard in that state will neither receive update requests from the parent shard leader, nor participate in distributed search.

Method Detail

values

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

Returns:

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

valueOf

public static Slice.State 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

toString

public String toString()

Overrides:

toString in class Enum<Slice.State>

getState

public static Slice.State getState(String stateStr)

Converts the state string to a State instance.