Package org.apache.hadoop.hbase.client

Interface CatalogReplicaLoadBalanceSelector

All Known Implementing Classes:

CatalogReplicaLoadBalanceSimpleSelector

@Private
interface CatalogReplicaLoadBalanceSelector

A Catalog replica selector decides which catalog replica to go for read requests when it is configured as CatalogReplicaMode.LoadBalance.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	UNINITIALIZED_NUM_OF_REPLICAS

Method Summary

Modifier and Type	Method	Description
void	onError(HRegionLocation loc)	This method is called when input location is stale, i.e, when clients run into org.apache.hadoop.hbase.NotServingRegionException.
int	select(TableName tablename, byte[] row, RegionLocateType locateType)	Select a catalog replica region where client go to loop up the input row key.

Field Details

UNINITIALIZED_NUM_OF_REPLICAS

static final int UNINITIALIZED_NUM_OF_REPLICAS

See Also:

• Constant Field Values

Method Details

onError

void onError(HRegionLocation loc)

This method is called when input location is stale, i.e, when clients run into org.apache.hadoop.hbase.NotServingRegionException.

Parameters:

loc - stale location

select

int select(TableName tablename,
 byte[] row,
 RegionLocateType locateType)

Select a catalog replica region where client go to loop up the input row key.

Parameters:

tablename - table name

row - key to look up

locateType - locate type

Returns:

replica id