org.apache.hadoop.hbase.client

Interface ConnectionRegistry

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

MasterRegistry, ZKConnectionRegistry

@InterfaceAudience.Private
interface ConnectionRegistry
extends Closeable

Registry for meta information needed for connection setup to a HBase cluster. Implementations hold cluster information such as this cluster's id, location of hbase:meta, etc.. Internal use only.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this instance and releases any system resources associated with it
CompletableFuture<ServerName>	getActiveMaster() Get the address of active HMaster.
CompletableFuture<String>	getClusterId() Should only be called once.
CompletableFuture<RegionLocations>	getMetaRegionLocations() Get the location of meta region(s).

Method Detail

getMetaRegionLocations

CompletableFuture<RegionLocations> getMetaRegionLocations()

Get the location of meta region(s).

getClusterId

CompletableFuture<String> getClusterId()

Should only be called once.

The upper layer should store this value somewhere as it will not be change any more.

getActiveMaster

CompletableFuture<ServerName> getActiveMaster()

Get the address of active HMaster.

close

void close()

Closes this instance and releases any system resources associated with it

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable