org.apache.hadoop.hbase.mob

Class MobFile

java.lang.Object

org.apache.hadoop.hbase.mob.MobFile

Direct Known Subclasses:

CachedMobFile

@InterfaceAudience.Private
public class MobFile
extends Object

The mob file.

Field Summary

Fields

Modifier and Type	Field and Description
private HStoreFile	sf

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MobFile()
protected	MobFile(HStoreFile sf)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the underlying reader, but do no evict blocks belonging to this file.
static MobFile	create(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf, CacheConfig cacheConf) Creates an instance of the MobFile.
String	getFileName() Gets the file name.
StoreFileScanner	getScanner() Internal use only.
void	open() Opens the underlying reader.
Cell	readCell(Cell search, boolean cacheMobBlocks) Reads a cell from the mob file.
Cell	readCell(Cell search, boolean cacheMobBlocks, long readPt) Reads a cell from the mob file.

Methods inherited from class java.lang.Object

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

Field Detail

sf

private HStoreFile sf

Constructor Detail

MobFile

protected MobFile()

MobFile

protected MobFile(HStoreFile sf)

Method Detail

getScanner

public StoreFileScanner getScanner()
                            throws IOException

Internal use only. This is used by the sweeper.

Returns:

The store file scanner.

Throws:

IOException

readCell

public Cell readCell(Cell search,
                     boolean cacheMobBlocks)
              throws IOException

Reads a cell from the mob file.

Parameters:

search - The cell need to be searched in the mob file.

cacheMobBlocks - Should this scanner cache blocks.

Returns:

The cell in the mob file.

Throws:

IOException

readCell

public Cell readCell(Cell search,
                     boolean cacheMobBlocks,
                     long readPt)
              throws IOException

Reads a cell from the mob file.

Parameters:

search - The cell need to be searched in the mob file.

cacheMobBlocks - Should this scanner cache blocks.

readPt - the read point.

Returns:

The cell in the mob file.

Throws:

IOException

getFileName

public String getFileName()

Gets the file name.

Returns:

The file name.

open

public void open()
          throws IOException

Opens the underlying reader. It's not thread-safe. Use MobFileCache.openFile() instead.

Throws:

IOException

close

public void close()
           throws IOException

Closes the underlying reader, but do no evict blocks belonging to this file. It's not thread-safe. Use MobFileCache.closeFile() instead.

Throws:

IOException

create

public static MobFile create(org.apache.hadoop.fs.FileSystem fs,
                             org.apache.hadoop.fs.Path path,
                             org.apache.hadoop.conf.Configuration conf,
                             CacheConfig cacheConf)
                      throws IOException

Creates an instance of the MobFile.

Parameters:

fs - The file system.

path - The path of the underlying StoreFile.

conf - The configuration.

cacheConf - The CacheConfig.

Returns:

An instance of the MobFile.

Throws:

IOException