tachyon

Class Journal

java.lang.Object

tachyon.Journal

public class Journal
extends Object

The Journal manages Tachyon image and journal log.

Constructor Summary

Constructors

Constructor and Description
Journal(String folder, String imageFileName, String editLogFileName)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	createEditLog(long transactionId)
void	createImage(MasterInfo info)
EditLog	getEditLog()
long	loadEditLog(MasterInfo info) Load edit log.
void	loadImage(MasterInfo info)

Methods inherited from class java.lang.Object

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

Constructor Detail

Journal

public Journal(String folder,
       String imageFileName,
       String editLogFileName)
        throws IOException

Throws:

IOException

Method Detail

loadImage

public void loadImage(MasterInfo info)
               throws IOException

Throws:

IOException

loadEditLog

public long loadEditLog(MasterInfo info)
                 throws IOException

Load edit log.

Parameters:

info - The Master Info.

Returns:

The last transaction id.

Throws:

IOException

createImage

public void createImage(MasterInfo info)
                 throws IOException

Throws:

IOException

createEditLog

public void createEditLog(long transactionId)
                   throws IOException

Throws:

IOException

getEditLog

public EditLog getEditLog()

close

public void close()