org.apache.hadoop.hbase.client

Class RegionReplicaUtil

java.lang.Object

org.apache.hadoop.hbase.client.RegionReplicaUtil

@InterfaceAudience.Private
public class RegionReplicaUtil
extends Object

Utility methods which contain the logic for regions and replicas.

Constructor Summary

Constructors

Constructor and Description
RegionReplicaUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static HRegionInfo	getRegionInfoForDefaultReplica(HRegionInfo regionInfo) Returns the HRegionInfo for the default replicaId (0).
static HRegionInfo	getRegionInfoForReplica(HRegionInfo regionInfo, int replicaId) Returns the HRegionInfo for the given replicaId.
static boolean	isDefaultReplica(HRegionInfo hri)
static boolean	isDefaultReplica(int replicaId)
static void	removeNonDefaultRegions(Collection<HRegionInfo> regions) Removes the non-default replicas from the passed regions collection

Methods inherited from class java.lang.Object

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

Constructor Detail

RegionReplicaUtil

public RegionReplicaUtil()

Method Detail

getRegionInfoForReplica

public static HRegionInfo getRegionInfoForReplica(HRegionInfo regionInfo,
                                  int replicaId)

Returns the HRegionInfo for the given replicaId. HRegionInfo's correspond to a range of a table, but more than one "instance" of the same range can be deployed which are differentiated by the replicaId.

Parameters:

replicaId - the replicaId to use

Returns:

an HRegionInfo object corresponding to the same range (table, start and end key), but for the given replicaId.

getRegionInfoForDefaultReplica

public static HRegionInfo getRegionInfoForDefaultReplica(HRegionInfo regionInfo)

Returns the HRegionInfo for the default replicaId (0). HRegionInfo's correspond to a range of a table, but more than one "instance" of the same range can be deployed which are differentiated by the replicaId.

Returns:

an HRegionInfo object corresponding to the same range (table, start and end key), but for the default replicaId.

isDefaultReplica

public static boolean isDefaultReplica(int replicaId)

Returns:

true if this replicaId corresponds to default replica for the region

isDefaultReplica

public static boolean isDefaultReplica(HRegionInfo hri)

Returns:

true if this region is a default replica for the region

removeNonDefaultRegions

public static void removeNonDefaultRegions(Collection<HRegionInfo> regions)

Removes the non-default replicas from the passed regions collection

Parameters:

regions -