org.apache.hadoop.hbase.wal

Class FSHLogProvider

java.lang.Object

org.apache.hadoop.hbase.wal.AbstractFSWALProvider<FSHLog>

org.apache.hadoop.hbase.wal.FSHLogProvider

All Implemented Interfaces:

WALProvider

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public class FSHLogProvider
extends AbstractFSWALProvider<FSHLog>

A WAL provider that use FSHLog.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FSHLogProvider.Writer

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.wal.AbstractFSWALProvider

AbstractFSWALProvider.Reader, AbstractFSWALProvider.WALStartTimeComparator

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.wal.WALProvider

WALProvider.AsyncWriter, WALProvider.WriterBase

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOG

Fields inherited from class org.apache.hadoop.hbase.wal.AbstractFSWALProvider

abortable, conf, DEFAULT_PROVIDER_ID, DEFAULT_SEPARATE_OLDLOGDIR, factory, initialized, listeners, logPrefix, META_WAL_PROVIDER_ID, providerId, SEPARATE_OLDLOGDIR, SPLITTING_EXT, wal, WAL_FILE_NAME_DELIMITER

Constructor Summary

Constructors

Constructor and Description
FSHLogProvider()

Method Summary

Modifier and Type	Method and Description
protected FSHLog	createWAL()
static FSHLogProvider.Writer	createWriter(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, boolean overwritable) Public because of FSHLog.
static FSHLogProvider.Writer	createWriter(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, boolean overwritable, long blocksize) Public because of FSHLog.
protected void	doInit(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class org.apache.hadoop.hbase.wal.AbstractFSWALProvider

addWALActionsListener, close, extractFileNumFromWAL, findArchivedLog, getCurrentFileName, getLogFileSize, getLogFileSize, getNumLogFiles, getNumRolledLogFiles, getServerNameFromWALDirectoryName, getServerNameFromWALDirectoryName, getWAL, getWALArchiveDirectoryName, getWALDirectoryName, getWALPrefixFromWALName, getWALs, init, isArchivedLogFile, isMetaFile, isMetaFile, openReader, requestLogRoll, shutdown, validateWALFilename

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.wal.WALProvider

getWALFileLengthProvider

Field Detail

LOG

private static final org.slf4j.Logger LOG

Constructor Detail

FSHLogProvider

public FSHLogProvider()

Method Detail

createWriter

public static FSHLogProvider.Writer createWriter(org.apache.hadoop.conf.Configuration conf,
                                                 org.apache.hadoop.fs.FileSystem fs,
                                                 org.apache.hadoop.fs.Path path,
                                                 boolean overwritable)
                                          throws IOException

Public because of FSHLog. Should be package-private

Parameters:

overwritable - if the created writer can overwrite. For recovered edits, it is true and for WAL it is false. Thus we can distinguish WAL and recovered edits by this.

Throws:

IOException

createWriter

public static FSHLogProvider.Writer createWriter(org.apache.hadoop.conf.Configuration conf,
                                                 org.apache.hadoop.fs.FileSystem fs,
                                                 org.apache.hadoop.fs.Path path,
                                                 boolean overwritable,
                                                 long blocksize)
                                          throws IOException

Public because of FSHLog. Should be package-private

Throws:

IOException

createWAL

protected FSHLog createWAL()
                    throws IOException

Specified by:

createWAL in class AbstractFSWALProvider<FSHLog>

Throws:

IOException

doInit

protected void doInit(org.apache.hadoop.conf.Configuration conf)
               throws IOException

Specified by:

doInit in class AbstractFSWALProvider<FSHLog>

Throws:

IOException