org.apache.hadoop.hbase.master

Interface SnapshotSentinel

All Known Implementing Classes:

CloneSnapshotHandler, DisabledTableSnapshotHandler, EnabledTableSnapshotHandler, RestoreSnapshotHandler, TakeSnapshotHandler

@InterfaceAudience.Private
 @InterfaceStability.Unstable
public interface SnapshotSentinel

Watch the current snapshot under process

Method Summary

Modifier and Type	Method and Description
void	cancel(String why) Actively cancel a running snapshot.
long	getCompletionTimestamp()
ForeignException	getExceptionIfFailed() Get the exception that caused the snapshot to fail, if the snapshot has failed.
HBaseProtos.SnapshotDescription	getSnapshot()
boolean	isFinished() Check to see if the snapshot is finished, where finished may be success or failure.
void	rethrowExceptionIfFailed() Rethrow the exception returned by getExceptionIfFailed().

Method Detail

isFinished

boolean isFinished()

Check to see if the snapshot is finished, where finished may be success or failure.

Returns:

false if the snapshot is still in progress, true if the snapshot has finished

getCompletionTimestamp

long getCompletionTimestamp()

Returns:

-1 if the snapshot is in progress, otherwise the completion timestamp.

cancel

void cancel(String why)

Actively cancel a running snapshot.

Parameters:

why - Reason for cancellation.

getSnapshot

HBaseProtos.SnapshotDescription getSnapshot()

Returns:

the description of the snapshot being run

getExceptionIfFailed

ForeignException getExceptionIfFailed()

Get the exception that caused the snapshot to fail, if the snapshot has failed.

Returns:

ForeignException that caused the snapshot to fail, or null if the snapshot is still in progress or has succeeded

rethrowExceptionIfFailed

void rethrowExceptionIfFailed()
                       throws ForeignException

Rethrow the exception returned by getExceptionIfFailed(). If there is no exception this is a no-op.

Throws:

ForeignException - all exceptions from remote sources are procedure exceptions