Add rake task to finalize batched background migration (PK conversion)

Merged Krasimir Angelov requested to merge 292874-finalize-pk-conversion-inline into master

What does this MR do?

This MR adds rake task that will finalize batched background migration (PK conversion to bigint). We try to find the related batched background migration and finalize it (if needed).

If the migration is already finished, do nothing. Otherwise change its status to finalizing in order to prevent it being picked up by the background worker. Perform all pending jobs, then keep running until migration is finished.

This MR also updates the ensure_batched_background_migration_is_finished migration helper to include information how to use this new rake task.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

Does this MR contain changes to processing or storing of credentials or tokens, authorization and authentication methods or other items described in the security review guidelines? If not, then delete this Security section.

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team

Related to #292874 (closed)

Edited by Krasimir Angelov