[LUCENE-2481] Enhance SnapshotDeletionPolicy to allow taking multiple snapshots

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.1, 4.0-ALPHA
• Component/s: core/index
• Lucene Fields: New, Patch Available
• Assignee: Shai Erera
• Reporter: Shai Erera
• Created: 27/May/10 16:00
• Updated: 28/Aug/22 12:27
• Resolved: 31/May/10 14:38

Description

A spin off from here: http://www.gossamer-threads.com/lists/lucene/java-dev/99161?do=post_view_threaded#99161

I will:

1. Replace snapshot() with snapshot(String), so that one can name/identify the snapshot
2. Add some supporting methods, like release(String), getSnapshots() etc.
3. Some unit tests of course.

This is mostly written already - I want to contribute it. I've also written a PersistentSDP, which persists the snapshots on stable storage (a Lucene index in this case) to support opening an IW with existing snapshots already, so they don't get deleted. If it's interesting, I can contribute it as well.

Porting my patch to the new API. Should post it soon.