[HDDS-1371] Download RocksDB checkpoint from OM Leader to Follower

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: OM HA, Ozone Manager
• Labels: pull-request-available
• Target Version/s: 0.5.0
• Assignee: Hanisha Koneru
• Reporter: Hanisha Koneru
• Created: 02/Apr/19 19:00
• Updated: 04/Jun/20 20:18
• Resolved: 07/Jun/19 02:43

Description

If a follower OM is lagging way behind the leader OM or in case of a restart or bootstrapping, a follower OM might need RocksDB checkpoint from the leader to catch up with it. This is because the leader might have purged its logs after taking a snapshot.
This Jira aims to add support to download a RocksDB checkpoint from leader OM to follower OM through a HTTP servlet. We reuse the DBCheckpoint servlet used by Recon server. 

Issue Links

• links to: GitHub Pull Request #703