[OAK-4553] Retain journal entries for valid checkpoints

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.4.8, 1.5.6, 1.6.0
• Component/s: core, documentmk
• Assignee: Marcel Reutegger
• Reporter: Marcel Reutegger
• Created: 12/Jul/16 12:12
• Updated: 27/Sep/16 12:42
• Resolved: 12/Jul/16 13:37

Description

OAK-4528 will use the journal to answer diff calls. While the default max age for the journal GC is 6 hours, it may still happen that journal entries are deleted when they are actually still needed. E.g. consider a repository with async index update configured and the repository is shutdown with a valid checkpoint for the current async index state. If the repository is stopped for more than 6 hours, the journal GC may rather quickly remove all entries even though the async index update still needs some of them.

Issue Links

• is depended upon by: OAK-4528 diff calculation in DocumentNodeStore should try to re-use journal info on diff cache miss