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Add primary key and drop unique index on cn_notice_regions on wmf wikis
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Apply T312274 to wmf wikis

  1. ALTERs to run:
  2. Where to run those changes: centralnotice
  3. When to run those changes: any time
  4. If the schema change is backwards compatible: Yes
  5. If the schema change has been tested already on some of the test/beta wikis: beta already running with the new schema
  6. if the data should be made available on the labs replicas and/or dumps: no change of the existing rules

Due to a bug in the schema change generator (T314138) the DROP + ALTER should be rewritten to be atomic:

alter table cn_notice_regions drop key nr_notice_id_region, ADD  PRIMARY KEY (nr_notice_id, nr_region);

Event Timeline

Marostegui triaged this task as Medium priority.
Marostegui moved this task from Triage to Ready on the DBA board.

Mentioned in SAL (#wikimedia-operations) [2023-01-04T14:14:58Z] <marostegui> dbmaint deploy schema change on s7 eqiad T326228