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Add primary key and drop unique index on revtag on wmf wikis
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Apply T243985 to wmf wikis

  1. ALTERs to run:
  2. Where to run those changes: s3 (wikis T314140#8115150), s4, s7 (frwiktionary and metawiki), s8
  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 revtag drop key rt_type_page_revision, ADD  PRIMARY KEY (rt_type, rt_page, rt_revision);


Event Timeline

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