[HBASE-24718] Generic NamedQueue framework for recent in-memory history

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.4.0
• Hadoop Flags: Reviewed
• Assignee: Viraj Jasani
• Reporter: Viraj Jasani
• Created: 12/Jul/20 18:31
• Updated: 26/Oct/21 11:45
• Resolved: 22/Jul/20 06:43

Description

As per the discussion on parent jira, we should come up with named queue (online ring buffer) to serve recent history for multiple use-cases like slowlog, balancer decision, other region activities e.g flush, compaction, split, merge etc.

Since we already have slow/large rpc logs in ring buffer (HBASE-22978), as part of this Jira, the proposal is to refactor slowlog provider to get generic payload for ring buffer and based on event type (slow_log is the only one for now), we can have separate internal in-memory queues.

After this refactor, it should be relatively simpler to use the same framework and create more cases like parent Jira (balancer decision in ring buffer).

Issue Links

• is related to: HBASE-22978 Online slow response log
• relates to: HBASE-26345 Design doc for HBase NamedQueue framework
• links to: GitHub Pull Request #2052
• links to: GitHub Pull Request #2109
• links to: GitHub Pull Request #2110