org.apache.hadoop.hbase.coordination

Interface OpenRegionCoordination

All Known Implementing Classes:

ZkOpenRegionCoordination

@InterfaceAudience.Private
public interface OpenRegionCoordination

Cocoordination operations for opening regions.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	OpenRegionCoordination.OpenRegionDetails Interface for region opening tasks.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	commitOpenOnMasterSide(AssignmentManager assignmentManager, HRegionInfo regionInfo, OpenRegionCoordination.OpenRegionDetails ord) Commits opening operation on HM side (steps required for "commit" are determined by coordination implementation).
OpenRegionCoordination.OpenRegionDetails	getDetailsForNonCoordinatedOpening() Get details object with params for case when we're opening on regionserver side with all "default" properties.
OpenRegionCoordination.OpenRegionDetails	parseFromProtoRequest(AdminProtos.OpenRegionRequest.RegionOpenInfo regionOpenInfo) Construct OpenRegionDetails instance from part of protobuf request.
boolean	tickleOpening(OpenRegionCoordination.OpenRegionDetails ord, HRegionInfo regionInfo, RegionServerServices rsServices, String context) Heartbeats to prevent timeouts.
boolean	transitionFromOfflineToOpening(HRegionInfo regionInfo, OpenRegionCoordination.OpenRegionDetails ord) Transitions region from offline to opening state.
boolean	transitionToOpened(HRegion r, OpenRegionCoordination.OpenRegionDetails ord) Tries to move regions to OPENED state.
boolean	tryTransitionFromOfflineToFailedOpen(RegionServerServices rsServices, HRegionInfo hri, OpenRegionCoordination.OpenRegionDetails ord) Tries transition region from offline to failed open.
boolean	tryTransitionFromOpeningToFailedOpen(HRegionInfo hri, OpenRegionCoordination.OpenRegionDetails ord) Tries transition from Opening to Failed open.

Method Detail

transitionToOpened

boolean transitionToOpened(HRegion r,
                         OpenRegionCoordination.OpenRegionDetails ord)
                           throws IOException

Tries to move regions to OPENED state.

Parameters:

r - Region we're working on.

ord - details about region opening task

Returns:

whether transition was successful or not

Throws:

IOException

transitionFromOfflineToOpening

boolean transitionFromOfflineToOpening(HRegionInfo regionInfo,
                                     OpenRegionCoordination.OpenRegionDetails ord)

Transitions region from offline to opening state.

Parameters:

regionInfo - region we're working on.

ord - details about opening task.

Returns:

true if successful, false otherwise

tickleOpening

boolean tickleOpening(OpenRegionCoordination.OpenRegionDetails ord,
                    HRegionInfo regionInfo,
                    RegionServerServices rsServices,
                    String context)

Heartbeats to prevent timeouts.

Parameters:

ord - details about opening task.

regionInfo - region we're working on.

rsServices - instance of RegionServerrServices

context - used for logging purposes only

Returns:

true if successful heartbeat, false otherwise.

tryTransitionFromOfflineToFailedOpen

boolean tryTransitionFromOfflineToFailedOpen(RegionServerServices rsServices,
                                           HRegionInfo hri,
                                           OpenRegionCoordination.OpenRegionDetails ord)

Tries transition region from offline to failed open.

Parameters:

rsServices - instance of RegionServerServices

hri - region we're working on

ord - details about region opening task

Returns:

true if successful, false otherwise

tryTransitionFromOpeningToFailedOpen

boolean tryTransitionFromOpeningToFailedOpen(HRegionInfo hri,
                                           OpenRegionCoordination.OpenRegionDetails ord)

Tries transition from Opening to Failed open.

Parameters:

hri - region we're working on

ord - details about region opening task

Returns:

true if successfu. false otherwise.

parseFromProtoRequest

OpenRegionCoordination.OpenRegionDetails parseFromProtoRequest(AdminProtos.OpenRegionRequest.RegionOpenInfo regionOpenInfo)

Construct OpenRegionDetails instance from part of protobuf request.

Returns:

instance of OpenRegionDetails.

getDetailsForNonCoordinatedOpening

OpenRegionCoordination.OpenRegionDetails getDetailsForNonCoordinatedOpening()

Get details object with params for case when we're opening on regionserver side with all "default" properties.

commitOpenOnMasterSide

boolean commitOpenOnMasterSide(AssignmentManager assignmentManager,
                             HRegionInfo regionInfo,
                             OpenRegionCoordination.OpenRegionDetails ord)

Commits opening operation on HM side (steps required for "commit" are determined by coordination implementation).

Returns:

true if committed successfully, false otherwise.