org.apache.hadoop.hbase.master.assignment

Class RegionStateStore

java.lang.Object

org.apache.hadoop.hbase.master.assignment.RegionStateStore

@InterfaceAudience.Private
public class RegionStateStore
extends Object

Store Region State to hbase:meta table.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	RegionStateStore.RegionStateVisitor

Field Summary

Fields

Modifier and Type	Field and Description
protected static char	META_REPLICA_ID_DELIMITER The delimiter for meta columns for replicaIds > 0

Constructor Summary

Constructors

Constructor and Description
RegionStateStore(MasterServices master)

Method Summary

Modifier and Type	Method and Description
void	deleteRegion(HRegionInfo regionInfo)
void	deleteRegions(List<HRegionInfo> regions)
protected RegionState.State	getRegionState(Result r, int replicaId) Pull the region state from a catalog table Result.
void	mergeRegions(HRegionInfo parent, HRegionInfo hriA, HRegionInfo hriB, ServerName serverName)
void	splitRegion(HRegionInfo parent, HRegionInfo hriA, HRegionInfo hriB, ServerName serverName)
void	start()
void	stop()
protected void	updateMetaLocation(HRegionInfo regionInfo, ServerName serverName)
protected void	updateRegionLocation(HRegionInfo regionInfo, RegionState.State state, Put... put)
void	updateRegionLocation(HRegionInfo regionInfo, RegionState.State state, ServerName regionLocation, ServerName lastHost, long openSeqNum, long pid)
void	updateRegionState(long openSeqNum, long pid, RegionState newState, RegionState oldState)
protected void	updateUserRegionLocation(HRegionInfo regionInfo, RegionState.State state, ServerName regionLocation, ServerName lastHost, long openSeqNum, long pid)
void	visitMeta(RegionStateStore.RegionStateVisitor visitor)

Methods inherited from class java.lang.Object

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

Field Detail

META_REPLICA_ID_DELIMITER

protected static final char META_REPLICA_ID_DELIMITER

The delimiter for meta columns for replicaIds > 0

See Also:

Constant Field Values

Constructor Detail

RegionStateStore

public RegionStateStore(MasterServices master)

Method Detail

start

public void start()
           throws IOException

Throws:

IOException

stop

public void stop()

visitMeta

public void visitMeta(RegionStateStore.RegionStateVisitor visitor)
               throws IOException

Throws:

IOException

updateRegionLocation

public void updateRegionLocation(HRegionInfo regionInfo,
                                 RegionState.State state,
                                 ServerName regionLocation,
                                 ServerName lastHost,
                                 long openSeqNum,
                                 long pid)
                          throws IOException

Throws:

IOException

updateRegionState

public void updateRegionState(long openSeqNum,
                              long pid,
                              RegionState newState,
                              RegionState oldState)
                       throws IOException

Throws:

IOException

updateMetaLocation

protected void updateMetaLocation(HRegionInfo regionInfo,
                                  ServerName serverName)
                           throws IOException

Throws:

IOException

updateUserRegionLocation

protected void updateUserRegionLocation(HRegionInfo regionInfo,
                                        RegionState.State state,
                                        ServerName regionLocation,
                                        ServerName lastHost,
                                        long openSeqNum,
                                        long pid)
                                 throws IOException

Throws:

IOException

updateRegionLocation

protected void updateRegionLocation(HRegionInfo regionInfo,
                                    RegionState.State state,
                                    Put... put)
                             throws IOException

Throws:

IOException

splitRegion

public void splitRegion(HRegionInfo parent,
                        HRegionInfo hriA,
                        HRegionInfo hriB,
                        ServerName serverName)
                 throws IOException

Throws:

IOException

mergeRegions

public void mergeRegions(HRegionInfo parent,
                         HRegionInfo hriA,
                         HRegionInfo hriB,
                         ServerName serverName)
                  throws IOException

Throws:

IOException

deleteRegion

public void deleteRegion(HRegionInfo regionInfo)
                  throws IOException

Throws:

IOException

deleteRegions

public void deleteRegions(List<HRegionInfo> regions)
                   throws IOException

Throws:

IOException

getRegionState

protected RegionState.State getRegionState(Result r,
                                           int replicaId)

Pull the region state from a catalog table Result.

Parameters:

r - Result to pull the region state from

Returns:

the region state, or OPEN if there's no value written.