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Resolve "Swap Suggestions to bigint (Self-host)"

Diogo Frazão requested to merge 417402-swap-integer-and-bigint-columns-for-notes-and-dependent-tables-for-self-managed-2 into master

What does this MR do and why?

This MR swaps thesuggestions.note_id and suggestions.note_id_convert_to_bigint columns for self-managed instances. This was already done for GitLab.com with Swap suggestions.note_id to bigint (!116622 - merged). The process is outlined here.

The timeline for GitLab.com was the following:

Since we made the decision to commit schema changes to structure.sql for the above MRs, we now need to take into account the state of the schema from which the self-managed instance was created.

Screenshots or screen recordings

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Before After

How to set up and validate locally

  1. Create new instance from each of 15.8.0, 15.9.0, 16.0.0, 16.1.0 and 16.2.0
  2. Upgrade all instances to 16.2.1
  3. Execute the migrations from this MR
  4. Verify migrations execute successfully and suggestions table has the expected schema.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #417402 (closed)

Edited by Diogo Frazão

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