[CASSANDRA-15655] Optionally set nowInSec in the future for validation repairs

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-alpha4, 4.0
• Component/s: Consistency/Repair
• Change Category: Operability
• Complexity: Low Hanging Fruit
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/6a302f734a1dede4b4bdee5e5f67c5ada6f0115d

Test and Documentation Plan

cci runs

• Assignee: Marcus Eriksson Assign to me
• Reporter: Marcus Eriksson

Authors

Marcus Eriksson

Reviewers

Ekaterina Dimitrova

• Created: 23/Mar/20 09:41
• Updated: 15/May/20 08:54
• Resolved: 03/Apr/20 10:57

Description

There is a race when running validation repairs where we might build merkle trees on one node, have gcgs expire, tombstones get compacted out and then build merkle trees on other nodes, causing false positive preview repair mismatch