[CASSANDRA-19186] Investigate p99 query spikes during memtable index flushes

• Type: Task
• Status: Triage Needed
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Feature/SAI
• Epic Link: Storage Attached Indexes (Phase 3)
• Platform: All
• Assignee: Unassigned
• Reporter: Mike Adamson
• Created: 08/Dec/23 17:01
• Updated: 18/Jan/24 17:52

Description

The attached image shows a clear p99 spike when a memtable index is being flushed to disk. This latency spike should be investigated to see if it can be mitigated.