@InterfaceAudience.Public public interface RegionLocator extends Closeable
Connection
.ConnectionFactory
,
Connection
,
Table
Modifier and Type | Field and Description |
---|---|
static String |
LOCATOR_META_REPLICAS_MODE
Configuration for Region Locator's mode when meta replica is configured.
|
static String |
LOCATOR_META_REPLICAS_MODE_LOADBALANCE_SELECTOR
Configuration for meta replica selector when Region Locator's LoadBalance mode is configured.
|
Modifier and Type | Method and Description |
---|---|
void |
clearRegionLocationCache()
Clear all the entries in the region location cache.
|
List<HRegionLocation> |
getAllRegionLocations()
Retrieves all of the regions associated with this table.
|
default byte[][] |
getEndKeys()
Gets the ending row key for every region in the currently open table.
|
TableName |
getName()
Gets the fully qualified table name instance of this table.
|
default HRegionLocation |
getRegionLocation(byte[] row)
Finds the region on which the given row is being served.
|
default HRegionLocation |
getRegionLocation(byte[] row,
boolean reload)
Finds the region on which the given row is being served.
|
default HRegionLocation |
getRegionLocation(byte[] row,
int replicaId)
Finds the region with the given replica id on which the given row is being served.
|
HRegionLocation |
getRegionLocation(byte[] row,
int replicaId,
boolean reload)
Finds the region with the given replica id on which the given row is being served.
|
default List<HRegionLocation> |
getRegionLocations(byte[] row)
Find all the replicas for the region on which the given row is being served.
|
List<HRegionLocation> |
getRegionLocations(byte[] row,
boolean reload)
Find all the replicas for the region on which the given row is being served.
|
default Pair<byte[][],byte[][]> |
getStartEndKeys()
Gets the starting and ending row keys for every region in the currently open table.
|
default byte[][] |
getStartKeys()
Gets the starting row key for every region in the currently open table.
|
static final String LOCATOR_META_REPLICAS_MODE
static final String LOCATOR_META_REPLICAS_MODE_LOADBALANCE_SELECTOR
default HRegionLocation getRegionLocation(byte[] row) throws IOException
row
- Row to find.IOException
- if a remote or network exception occursdefault HRegionLocation getRegionLocation(byte[] row, boolean reload) throws IOException
row
- Row to find.reload
- true to reload information or false to use cached informationIOException
- if a remote or network exception occursdefault HRegionLocation getRegionLocation(byte[] row, int replicaId) throws IOException
row
- Row to find.replicaId
- the replica idIOException
- if a remote or network exception occursHRegionLocation getRegionLocation(byte[] row, int replicaId, boolean reload) throws IOException
row
- Row to find.replicaId
- the replica idreload
- true to reload information or false to use cached informationIOException
- if a remote or network exception occursdefault List<HRegionLocation> getRegionLocations(byte[] row) throws IOException
row
- Row to find.IOException
- if a remote or network exception occursList<HRegionLocation> getRegionLocations(byte[] row, boolean reload) throws IOException
row
- Row to find.reload
- true to reload information or false to use cached informationIOException
- if a remote or network exception occursvoid clearRegionLocationCache()
List<HRegionLocation> getAllRegionLocations() throws IOException
reload
parameter.
Notice that the location for region replicas other than the default replica are also returned.List
of all regions associated with this table.IOException
- if a remote or network exception occursdefault byte[][] getStartKeys() throws IOException
This is mainly useful for the MapReduce integration.
IOException
- if a remote or network exception occursdefault byte[][] getEndKeys() throws IOException
This is mainly useful for the MapReduce integration.
IOException
- if a remote or network exception occursdefault Pair<byte[][],byte[][]> getStartEndKeys() throws IOException
This is mainly useful for the MapReduce integration.
IOException
- if a remote or network exception occursCopyright © 2007–2020 The Apache Software Foundation. All rights reserved.