[RATIS-850] Allow log purge up to snapshot index

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Target Version/s: 1.0.0
• Assignee: Hanisha Koneru
• Reporter: Hanisha Koneru
• Created: 14/Apr/20 19:35
• Updated: 24/Oct/23 18:27
• Resolved: 23/Apr/20 07:29

Description

Ratis logs are purged only up to the least commit index on all the peers. But if one peer is down, it stop log purging on all the peers. If the Ratis server takes snapshots, then we can purge logs up to the snapshot index even if some peer has not committed up to that index. When the peer rejoins the ring, instead of ratis logs, it can get the snapshot to catch up.

Issue Links

• is duplicated by: RATIS-562 Add a configurable Purge after Snapshot Policy in Ratis