org.apache.hadoop.hbase.snapshot

Class ReferenceServerWALsTask

java.lang.Object

org.apache.hadoop.hbase.snapshot.SnapshotTask

org.apache.hadoop.hbase.snapshot.ReferenceServerWALsTask

All Implemented Interfaces:

Callable<Void>, ForeignExceptionSnare

@InterfaceAudience.Private
@InterfaceStability.Evolving
public class ReferenceServerWALsTask
extends SnapshotTask

Reference all the WAL files under a server's WAL directory

Field Summary

Fields inherited from class org.apache.hadoop.hbase.snapshot.SnapshotTask

errorMonitor, snapshot

Constructor Summary

Constructors

Constructor and Description
ReferenceServerWALsTask(HBaseProtos.SnapshotDescription snapshot, ForeignExceptionDispatcher failureListener, org.apache.hadoop.fs.Path logDir, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs)

Method Summary

Methods

Modifier and Type	Method and Description
Void	call() Create reference files (empty files with the same path and file name as original).

Methods inherited from class org.apache.hadoop.hbase.snapshot.SnapshotTask

getException, hasException, rethrowException, snapshotFailure

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferenceServerWALsTask

public ReferenceServerWALsTask(HBaseProtos.SnapshotDescription snapshot,
                       ForeignExceptionDispatcher failureListener,
                       org.apache.hadoop.fs.Path logDir,
                       org.apache.hadoop.conf.Configuration conf,
                       org.apache.hadoop.fs.FileSystem fs)

Parameters:

snapshot - snapshot being run

failureListener - listener to check for errors while running the operation and to propagate errors found while running the task

logDir - log directory for the server. Name of the directory is taken as the name of the server

conf - Configuration to extract filesystem information

fs - filesystem where the log files are stored and should be referenced

Method Detail

call

public Void call()
          throws IOException,
                 ForeignException

Create reference files (empty files with the same path and file name as original).

Throws:

IOException - exception from hdfs or network problems

ForeignException - exception from an external procedure