org.apache.hadoop.hbase.snapshot

Class SnapshotTask

java.lang.Object

org.apache.hadoop.hbase.snapshot.SnapshotTask

All Implemented Interfaces:

Callable<Void>, ForeignExceptionSnare

Direct Known Subclasses:

CopyRecoveredEditsTask, ReferenceRegionHFilesTask, ReferenceServerWALsTask, TableInfoCopyTask

@InterfaceAudience.Private
public abstract class SnapshotTask
extends Object
implements ForeignExceptionSnare, Callable<Void>

General snapshot operation taken on a regionserver

Field Summary

Fields

Modifier and Type	Field and Description
protected ForeignExceptionDispatcher	errorMonitor
protected HBaseProtos.SnapshotDescription	snapshot

Constructor Summary

Constructors

Constructor and Description
SnapshotTask(HBaseProtos.SnapshotDescription snapshot, ForeignExceptionDispatcher monitor)

Method Summary

Methods

Modifier and Type	Method and Description
ForeignException	getException() Get the value of the captured exception.
boolean	hasException() Non-exceptional form of ForeignExceptionSnare.rethrowException().
void	rethrowException() Rethrow an exception currently held by the ForeignExceptionSnare.
void	snapshotFailure(String message, Exception e)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.Callable

call

Field Detail

snapshot

protected final HBaseProtos.SnapshotDescription snapshot

errorMonitor

protected final ForeignExceptionDispatcher errorMonitor

Constructor Detail

SnapshotTask

public SnapshotTask(HBaseProtos.SnapshotDescription snapshot,
            ForeignExceptionDispatcher monitor)

Parameters:

snapshot - Description of the snapshot we are going to operate on

monitor - listener interested in failures to the snapshot caused by this operation

Method Detail

snapshotFailure

public void snapshotFailure(String message,
                   Exception e)

rethrowException

public void rethrowException()
                      throws ForeignException

Description copied from interface: ForeignExceptionSnare

Rethrow an exception currently held by the ForeignExceptionSnare. If there is no exception this is a no-op

Specified by:

rethrowException in interface ForeignExceptionSnare

Throws:

ForeignException - all exceptions from remote sources are procedure exceptions

hasException

public boolean hasException()

Description copied from interface: ForeignExceptionSnare

Non-exceptional form of ForeignExceptionSnare.rethrowException(). Checks to see if any process to which the exception checkers is bound has created an error that would cause a failure.

Specified by:

hasException in interface ForeignExceptionSnare

Returns:

true if there has been an error,false otherwise

getException

public ForeignException getException()

Description copied from interface: ForeignExceptionSnare

Get the value of the captured exception.

Specified by:

getException in interface ForeignExceptionSnare

Returns:

the captured foreign exception or null if no exception captured.