[CASSANDRA-14749] Collection Deletions for Dropped Columns in 2.1/3.0 mixed-mode can delete rows

• Type: Bug
• Status: Resolved
• Priority: Urgent
• Resolution: Fixed
• Fix Version/s: 3.0.18
• Component/s: Messaging/Internode
• Bug Category: Correctness - Recoverable Corruption / Loss
• Severity: Critical
• Complexity: Challenging
• Discovered By: Adhoc Test
• Since Version: 3.0.0
• Assignee: Benedict Elliott Smith
• Reporter: Benedict Elliott Smith

Authors

Benedict Elliott Smith

Reviewers

Aleksey Yeschenko, Sylvain Lebresne

• Created: 13/Sep/18 16:02
• Updated: 02/Aug/19 02:48
• Resolved: 17/Sep/18 13:13

Description

Similar to CASSANDRA-14568, if a 2.1 node sends a response to a 3.0 node containing a deletion for a dropped collection column, instead of deleting the collection, we will delete the row containing the collection.

 

This is an admittedly unlikely cluster state but, during such a state, a great deal of data loss could happen.