org.apache.hadoop.hbase.coordination

Interface CloseRegionCoordination

All Known Implementing Classes:

ZkCloseRegionCoordination

@InterfaceAudience.Private
public interface CloseRegionCoordination

Coordinated operations for close region handlers.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	CloseRegionCoordination.CloseRegionDetails Marker interface for region closing tasks.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkClosingState(HRegionInfo regionInfo, CloseRegionCoordination.CloseRegionDetails crd) Called before actual region closing to check that we can do close operation on this region.
CloseRegionCoordination.CloseRegionDetails	getDetaultDetails() Get details object with params for case when we're closing on regionserver side internally (not because of RPC call from master), so we don't parse details from protobuf request.
CloseRegionCoordination.CloseRegionDetails	parseFromProtoRequest(AdminProtos.CloseRegionRequest request) Construct CloseRegionDetails instance from CloseRegionRequest.
void	setClosedState(HRegion region, ServerName sn, CloseRegionCoordination.CloseRegionDetails crd) Called after region is closed to notify all interesting parties / "register" region as finally closed.

Method Detail

checkClosingState

boolean checkClosingState(HRegionInfo regionInfo,
                        CloseRegionCoordination.CloseRegionDetails crd)

Called before actual region closing to check that we can do close operation on this region.

Parameters:

regionInfo - region being closed

crd - details about closing operation

Returns:

true if caller shall proceed and close, false if need to abort closing.

setClosedState

void setClosedState(HRegion region,
                  ServerName sn,
                  CloseRegionCoordination.CloseRegionDetails crd)

Called after region is closed to notify all interesting parties / "register" region as finally closed.

Parameters:

region - region being closed

sn - ServerName on which task runs

crd - details about closing operation

parseFromProtoRequest

CloseRegionCoordination.CloseRegionDetails parseFromProtoRequest(AdminProtos.CloseRegionRequest request)

Construct CloseRegionDetails instance from CloseRegionRequest.

Returns:

instance of CloseRegionDetails

getDetaultDetails

CloseRegionCoordination.CloseRegionDetails getDetaultDetails()

Get details object with params for case when we're closing on regionserver side internally (not because of RPC call from master), so we don't parse details from protobuf request.