org.apache.hadoop.hbase.regionserver.wal

Class HLogFactory

java.lang.Object

org.apache.hadoop.hbase.regionserver.wal.HLogFactory

@InterfaceAudience.Private
public class HLogFactory
extends Object

Constructor Summary

Constructors

Constructor and Description
HLogFactory()

Method Summary

Methods

Modifier and Type	Method and Description
static HLog	createHLog(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path root, String logName, org.apache.hadoop.conf.Configuration conf)
static HLog	createHLog(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path root, String logName, org.apache.hadoop.conf.Configuration conf, List<WALActionsListener> listeners, String prefix)
static HLog	createHLog(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path root, String logName, String oldLogName, org.apache.hadoop.conf.Configuration conf)
static HLog	createMetaHLog(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path root, String logName, org.apache.hadoop.conf.Configuration conf, List<WALActionsListener> listeners, String prefix)
static HLog.Reader	createReader(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf)
static HLog.Reader	createReader(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf, CancelableProgressable reporter) Create a reader for the WAL.
static HLog.Reader	createReader(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf, CancelableProgressable reporter, boolean allowCustom)
static HLog.Writer	createRecoveredEditsWriter(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf)
static HLog.Writer	createWALWriter(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf) Create a writer for the WAL.

Methods inherited from class java.lang.Object

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

Constructor Detail

HLogFactory

public HLogFactory()

Method Detail

createHLog

public static HLog createHLog(org.apache.hadoop.fs.FileSystem fs,
              org.apache.hadoop.fs.Path root,
              String logName,
              org.apache.hadoop.conf.Configuration conf)
                       throws IOException

Throws:

IOException

createHLog

public static HLog createHLog(org.apache.hadoop.fs.FileSystem fs,
              org.apache.hadoop.fs.Path root,
              String logName,
              String oldLogName,
              org.apache.hadoop.conf.Configuration conf)
                       throws IOException

Throws:

IOException

createHLog

public static HLog createHLog(org.apache.hadoop.fs.FileSystem fs,
              org.apache.hadoop.fs.Path root,
              String logName,
              org.apache.hadoop.conf.Configuration conf,
              List<WALActionsListener> listeners,
              String prefix)
                       throws IOException

Throws:

IOException

createMetaHLog

public static HLog createMetaHLog(org.apache.hadoop.fs.FileSystem fs,
                  org.apache.hadoop.fs.Path root,
                  String logName,
                  org.apache.hadoop.conf.Configuration conf,
                  List<WALActionsListener> listeners,
                  String prefix)
                           throws IOException

Throws:

IOException

createReader

public static HLog.Reader createReader(org.apache.hadoop.fs.FileSystem fs,
                       org.apache.hadoop.fs.Path path,
                       org.apache.hadoop.conf.Configuration conf)
                                throws IOException

Throws:

IOException

createReader

public static HLog.Reader createReader(org.apache.hadoop.fs.FileSystem fs,
                       org.apache.hadoop.fs.Path path,
                       org.apache.hadoop.conf.Configuration conf,
                       CancelableProgressable reporter)
                                throws IOException

Create a reader for the WAL. If you are reading from a file that's being written to and need to reopen it multiple times, use HLog.Reader.reset() instead of this method then just seek back to the last known good position.

Returns:

A WAL reader. Close when done with it.

Throws:

IOException

createReader

public static HLog.Reader createReader(org.apache.hadoop.fs.FileSystem fs,
                       org.apache.hadoop.fs.Path path,
                       org.apache.hadoop.conf.Configuration conf,
                       CancelableProgressable reporter,
                       boolean allowCustom)
                                throws IOException

Throws:

IOException

createWALWriter

public static HLog.Writer createWALWriter(org.apache.hadoop.fs.FileSystem fs,
                          org.apache.hadoop.fs.Path path,
                          org.apache.hadoop.conf.Configuration conf)
                                   throws IOException

Create a writer for the WAL.

Returns:

A WAL writer. Close when done with it.

Throws:

IOException

createRecoveredEditsWriter

public static HLog.Writer createRecoveredEditsWriter(org.apache.hadoop.fs.FileSystem fs,
                                     org.apache.hadoop.fs.Path path,
                                     org.apache.hadoop.conf.Configuration conf)
                                              throws IOException

Throws:

IOException