[CASSANDRA-13023] Add droppable tombstone metrics

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Not A Problem
• Component/s: Legacy/Observability
• Assignee: Unassigned
• Reporter: Stefan Podkowinski
• Created: 09/Dec/16 13:01
• Updated: 02/Dec/20 13:45
• Resolved: 25/Jun/18 07:28

Description

Currently it's only possible to inspect the ratio of droppable tombstones on sstable basis using the sstablemetadata tool. It would be very useful to have this information provided as part of Cassandra metrics as well, e.g. to get an idea on the effectiveness of tombstone eviction during compactions over time.

Issue Links

• relates to: CASSANDRA-13024 Droppable Tombstone Ratio Calculation
• relates to: CASSANDRA-13015 improved compactions metrics
• relates to: CASSANDRA-16308 Add droppable tombstone metrics to nodetool tablestats