[CASSANDRA-14149] Count all types of tombstones in the read path and the rows/cells they shadow

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Legacy/Local Write-Read Paths
• Assignee: Unassigned
• Reporter: Alexander Dejanovski
• Created: 05/Jan/18 17:45
• Updated: 07/Mar/23 10:54

Description

This ticket is a follow up to CASSANDRA-8527 which aims at reporting row level tombstones in the read path.

The aim here is to fully categorize the cells/rows that can be shadowed by range tombstones. Currently, one range tombstone will count for 2 tombstone cells but as they may shadow thousands if not millions of actual cells, some latency issues in the local read path may be hard to diagnose.

Based on discussions on the ML, one outcome could be to distinctively count cell/row/range tombstones and the number of cells/rows shadowed by each type.

Issue Links

• is related to: CASSANDRA-8527 Account for range tombstones wherever we account for tombstones