Package org.elasticsearch.cluster.metadata

Class IndexGraveyard

java.lang.Object

org.elasticsearch.cluster.metadata.IndexGraveyard

All Implemented Interfaces:

ClusterState.FeatureAware, Diffable<Metadata.Custom>, Metadata.Custom, NamedDiffable<Metadata.Custom>, NamedWriteable, VersionedNamedWriteable, Writeable, ToXContent, ToXContentFragment

public final class IndexGraveyard
extends Object
implements Metadata.Custom

A collection of tombstones for explicitly marking indices as deleted in the cluster state. The cluster state contains a list of index tombstones for indices that have been deleted in the cluster. Because cluster states are processed asynchronously by nodes and a node could be removed from the cluster for a period of time, the tombstones remain in the cluster state for a fixed period of time, after which they are purged.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	IndexGraveyard.Builder	A class to build an IndexGraveyard.
static final class	IndexGraveyard.IndexGraveyardDiff	A class representing a diff of two IndexGraveyard objects.
static final class	IndexGraveyard.Tombstone	An individual tombstone entry for representing a deleted index.

Nested classes/interfaces inherited from interface org.elasticsearch.xcontent.ToXContent

ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.Params

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final Setting<Integer>	SETTING_MAX_TOMBSTONES	Setting for the maximum tombstones allowed in the cluster state; prevents the cluster state size from exploding too large, but it opens the very unlikely risk that if there are greater than MAX_TOMBSTONES index deletions while a node was offline, when it comes back online, it will have missed index deletions that it may need to process.
static final String	TYPE

Fields inherited from interface org.elasticsearch.xcontent.ToXContent

EMPTY_PARAMS

Constructor Summary

Constructors

Constructor	Description
IndexGraveyard(StreamInput in)

Method Summary

Modifier and Type	Method	Description
static IndexGraveyard.Builder	builder()
static IndexGraveyard.Builder	builder(IndexGraveyard graveyard)
boolean	containsIndex(Index index)	Returns true if the graveyard contains a tombstone for the given index.
EnumSet<Metadata.XContentContext>	context()
Diff<Metadata.Custom>	diff(Metadata.Custom previous)	Returns serializable object representing differences between this and previousState
boolean	equals(Object obj)
static IndexGraveyard	fromXContent(XContentParser parser)
Version	getMinimalSupportedVersion()	The minimal version of the recipient this object can be sent to
List<IndexGraveyard.Tombstone>	getTombstones()	Get the current unmodifiable index tombstone list.
String	getWriteableName()	Returns the name of the writeable object
int	hashCode()
static NamedDiff<Metadata.Custom>	readDiffFrom(StreamInput in)
String	toString()
XContentBuilder	toXContent(XContentBuilder builder, ToXContent.Params params)
void	writeTo(StreamOutput out)	Write this into the StreamOutput.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.elasticsearch.cluster.ClusterState.FeatureAware

getRequiredFeature

Methods inherited from interface org.elasticsearch.xcontent.ToXContentFragment

isFragment

Field Details

SETTING_MAX_TOMBSTONES

public static final Setting<Integer> SETTING_MAX_TOMBSTONES

Setting for the maximum tombstones allowed in the cluster state; prevents the cluster state size from exploding too large, but it opens the very unlikely risk that if there are greater than MAX_TOMBSTONES index deletions while a node was offline, when it comes back online, it will have missed index deletions that it may need to process.

TYPE

public static final String TYPE

See Also:

• Constant Field Values

Constructor Details

IndexGraveyard

public IndexGraveyard(StreamInput in)
               throws IOException

Throws:

IOException

Method Details

getWriteableName

public String getWriteableName()

Description copied from interface: VersionedNamedWriteable

Returns the name of the writeable object

Specified by:

getWriteableName in interface NamedWriteable

Specified by:

getWriteableName in interface VersionedNamedWriteable

getMinimalSupportedVersion

public Version getMinimalSupportedVersion()

Description copied from interface: VersionedNamedWriteable

The minimal version of the recipient this object can be sent to

Specified by:

getMinimalSupportedVersion in interface VersionedNamedWriteable

context

public EnumSet<Metadata.XContentContext> context()

Specified by:

context in interface Metadata.Custom

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getTombstones

public List<IndexGraveyard.Tombstone> getTombstones()

Get the current unmodifiable index tombstone list.

containsIndex

public boolean containsIndex(Index index)

Returns true if the graveyard contains a tombstone for the given index.

toXContent

public XContentBuilder toXContent(XContentBuilder builder,
 ToXContent.Params params)
                           throws IOException

Specified by:

toXContent in interface ToXContent

Throws:

IOException

fromXContent

public static IndexGraveyard fromXContent(XContentParser parser)
                                   throws IOException

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Description copied from interface: Writeable

Write this into the StreamOutput.

Specified by:

writeTo in interface Writeable

Throws:

IOException

diff

public Diff<Metadata.Custom> diff(Metadata.Custom previous)

Description copied from interface: Diffable

Returns serializable object representing differences between this and previousState

Specified by:

diff in interface Diffable<Metadata.Custom>

readDiffFrom

public static NamedDiff<Metadata.Custom> readDiffFrom(StreamInput in)
                                               throws IOException

Throws:

IOException

builder

public static IndexGraveyard.Builder builder()

builder

public static IndexGraveyard.Builder builder(IndexGraveyard graveyard)