org.apache.accumulo.server.master.state

Class MetaDataStateStore

java.lang.Object

org.apache.accumulo.server.master.state.TabletStateStore

org.apache.accumulo.server.master.state.MetaDataStateStore

All Implemented Interfaces:

Iterable<TabletLocationState>

Direct Known Subclasses:

RootTabletStateStore

public class MetaDataStateStore
extends TabletStateStore

Field Summary

Fields

Modifier and Type	Field and Description
protected Credentials	credentials
protected Instance	instance
protected CurrentState	state

Constructor Summary

Constructors

Modifier	Constructor and Description
	MetaDataStateStore()
	MetaDataStateStore(Instance instance, Credentials credentials, CurrentState state)
protected	MetaDataStateStore(Instance instance, Credentials credentials, CurrentState state, String targetTableName)
protected	MetaDataStateStore(String tableName)

Method Summary

Methods

Modifier and Type	Method and Description
ClosableIterator<TabletLocationState>	iterator() Scan the information about the tablets covered by this store
String	name() Identifying name for this tablet state store.
void	setFutureLocations(Collection<Assignment> assignments) Store the assigned locations in the data store.
void	setLocations(Collection<Assignment> assignments) Tablet servers will update the data store with the location when they bring the tablet online
void	unassign(Collection<TabletLocationState> tablets) Mark the tablets as having no known or future location.

Methods inherited from class org.apache.accumulo.server.master.state.TabletStateStore

setLocation, unassign

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

protected final Instance instance

state

protected final CurrentState state

credentials

protected final Credentials credentials

Constructor Detail

MetaDataStateStore

protected MetaDataStateStore(Instance instance,
                  Credentials credentials,
                  CurrentState state,
                  String targetTableName)

MetaDataStateStore

public MetaDataStateStore(Instance instance,
                  Credentials credentials,
                  CurrentState state)

MetaDataStateStore

protected MetaDataStateStore(String tableName)

MetaDataStateStore

public MetaDataStateStore()

Method Detail

iterator

public ClosableIterator<TabletLocationState> iterator()

Description copied from class: TabletStateStore

Scan the information about the tablets covered by this store

Specified by:

iterator in interface Iterable<TabletLocationState>

Specified by:

iterator in class TabletStateStore

setLocations

public void setLocations(Collection<Assignment> assignments)
                  throws DistributedStoreException

Description copied from class: TabletStateStore

Tablet servers will update the data store with the location when they bring the tablet online

Specified by:

setLocations in class TabletStateStore

Throws:

DistributedStoreException

setFutureLocations

public void setFutureLocations(Collection<Assignment> assignments)
                        throws DistributedStoreException

Description copied from class: TabletStateStore

Store the assigned locations in the data store.

Specified by:

setFutureLocations in class TabletStateStore

Throws:

DistributedStoreException

unassign

public void unassign(Collection<TabletLocationState> tablets)
              throws DistributedStoreException

Description copied from class: TabletStateStore

Mark the tablets as having no known or future location.

Specified by:

unassign in class TabletStateStore

Parameters:

tablets - the tablets' current information

Throws:

DistributedStoreException

name

public String name()

Description copied from class: TabletStateStore

Identifying name for this tablet state store.

Specified by:

name in class TabletStateStore