[CASSANDRA-15405] Mixed mode reads on compact storage tables can return incomplete results

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.20, 3.11.6
• Component/s: Legacy/Core
• Bug Category: Correctness - Transient Incorrect Response
• Severity: Critical
• Complexity: Normal
• Discovered By: Unit Test
• Platform: All
• Since Version: 3.0.0

Source Control Link

https://github.com/apache/cassandra/commit/f0aa60bec728fbdb9ee7455d2d6d2f6feb183330

Test and Documentation Plan

new upgrade test, circle ci runs

• Assignee: Marcus Eriksson
• Reporter: Marcus Eriksson

Authors

Marcus Eriksson

Reviewers

Aleksey Yeschenko, Sam Tunnicliffe

• Created: 07/Nov/19 17:37
• Updated: 11/Nov/19 10:01
• Resolved: 11/Nov/19 10:01

Description

In mixed mode (2.1/3.0), when coordinating a read on a 2.1 node, reading data from 3.0 nodes, we incorrectly trim the result (if it has tombstones) when preparing it for the 2.1 node, this is then interpreted by the 2.1 node as the pager has been exhausted.