Package org.apache.activemq.artemis.core.journal.impl

Class Reclaimer

java.lang.Object

org.apache.activemq.artemis.core.journal.impl.Reclaimer

public final 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 satisfied:

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.

Method Summary

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

Methods inherited from class java.lang.Object

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

Method Details

scan

public static void scan(JournalFile[] files)