org.apache.jackrabbit.oak.plugins.document

Class JournalGarbageCollector

java.lang.Object

org.apache.jackrabbit.oak.plugins.document.JournalGarbageCollector

public class JournalGarbageCollector
extends java.lang.Object

The JournalGarbageCollector can clean up JournalEntries that are older than a particular age.

It would typically be invoked in conjunction with the VersionGarbageCollector but must not be confused with that one - 'journal' refers to the separate collection that contains changed paths per background writes used for observation.

Constructor Summary

Constructors

Constructor and Description
JournalGarbageCollector(DocumentNodeStore nodeStore, long maxRevisionAgeMillis)

Method Summary

Modifier and Type	Method and Description
int	gc() Deletes entries in the journal that are older than getMaxRevisionAgeMillis().
Revision	getTailRevision()

Methods inherited from class java.lang.Object

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

Constructor Detail

JournalGarbageCollector

public JournalGarbageCollector(DocumentNodeStore nodeStore,
                               long maxRevisionAgeMillis)

Method Detail

gc

public int gc()

Deletes entries in the journal that are older than getMaxRevisionAgeMillis().

Returns:

the number of entries that have been removed

getTailRevision

public Revision getTailRevision()