[CASSANDRA-15004] Anti-compaction briefly corrupts sstable state for reads

• Type: Bug
• Status: Resolved
• Priority: Urgent
• Resolution: Fixed
• Fix Version/s: 3.0.18, 3.11.7, 4.0-alpha1, 4.0
• Component/s: Local/Compaction
• Bug Category: Correctness - Transient Incorrect Response
• Severity: Critical
• Complexity: Challenging
• Discovered By: Fuzz Test
• Assignee: Benedict Elliott Smith
• Reporter: Blake Eggleston

Authors

Benedict Elliott Smith

Reviewers

Marcus Eriksson

• Created: 01/Feb/19 01:33
• Updated: 01/Aug/21 12:24
• Resolved: 06/Feb/19 13:52

Description

Since we use multiple sstable rewriters in anticompaction, the first call to prepareToCommit will remove the original sstables from the tracker view before the other rewriters add their sstables. This creates a brief window where reads can miss data.