[CASSANDRA-17407] Validate existence of DCs when repairing

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.11.13, 4.0.4, 4.1-alpha1, 4.1
• Component/s: Consistency/Repair
• Change Category: Operability
• Complexity: Normal
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/b18a9f03377059d9caae8894e8734c2380344b66

Test and Documentation Plan

add test, run CI

• Assignee: Jan Karlsson
• Reporter: Jan Karlsson

Authors

Jan Karlsson

Reviewers

Berenguer Blasi, Brandon Williams

• Created: 28/Feb/22 14:41
• Updated: 27/May/22 19:25
• Resolved: 08/Mar/22 23:28

Description

With the new validation of data centers in the replication factor, it might be good to give similar treatment to repair.

Currently the behavior of the --in-dc flag only validates that it contains the local data center.

If a list is given containing nonexistent data centers, the repair will pass without errors or warning as long as this list also contains the local data center.

My suggestion would be to validate all the data centers and give an error when a nonexistent data center is given.