[JCR-2216] Append-only index updates

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0-alpha7
• Component/s: jackrabbit-core
• Assignee: Unassigned
• Reporter: Marcel Reutegger
• Created: 16/Jul/09 07:13
• Updated: 13/Aug/09 15:01
• Resolved: 05/Aug/09 15:05

Description

Currently index updates modify some existing files. This is troublesome in scenarios like a backup or when an index will be shared in a cluster (though this is not yet the case).

Requirements are:

• index segments need a custom (lucene) IndexDeletionPolicy to keep index commits for a given time.
• index segments are not only referenced by their name, but also with their generation
• the segments file must now also record the generation of a segment. the file itself must be generational itself.
• purging of outdated index segment commits