The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
This is a workaround for the problem described in #388253 (closed).
When doing a zero-downtime upgrade to 15.6, a GitLab instance can end up with stale DuplicateJobs cookies in Redis. This migration clears all such cookies.
This change should be back-ported to 15.6.