org.hornetq.core.journal.impl

Class Reclaimer

java.lang.Object

org.hornetq.core.journal.impl.Reclaimer

public class Reclaimer
extends Object

The journal consists of an ordered list of journal files Fn where 0 <= n <= N

A journal file can contain either positives (pos) or negatives (neg)

(Positives correspond either to adds or updates, and negatives correspond to deletes).

A file Fn can be deleted if, and only if the following criteria are satisified

1) All pos in a file Fn, must have corresponding neg in any file Fm where m >= n.

2) All pos that correspond to any neg in file Fn, must all live in any file Fm where 0 <= m <= n which are also marked for deletion in the same pass of the algorithm.

Author:

Tim Fox, Clebert Suconic

Constructor Summary

Constructors

Constructor and Description
Reclaimer()

Method Summary

Methods

Modifier and Type	Method and Description
void	scan(JournalFile[] files)

Methods inherited from class java.lang.Object

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

Constructor Detail

Reclaimer

public Reclaimer()

Method Detail

scan

public void scan(JournalFile[] files)