Mohamed Wael Khobalatte wrote:

> We lock the table as a precaution, with the understanding that we are
> undergoing a "small" downtime to finish replacing the int id by the new
> bigint

Ah, sorry I overlooked that most row updates are done
pre-transaction in a preliminary step:
  /* in batches, we update all the rows to new_id = id */


Best regards,
-- 
Daniel Vérité
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