https://bugzilla.wikimedia.org/show_bug.cgi?id=56577

--- Comment #7 from Sean Pringle <[email protected]> ---
Oops forgot to add:

The batch transfer process used a REPLACE INTO ... SELECT query walking the
archive.ar_rev_id index in fixed sizes. This statement in some forms is one
that gets listed as unsafe for SBR.

My initial checks on slaves showed it should have been ok there, but the focus
was always to ensure master accuracy first and continue to check slave sync
regularly while SBR is in effect.

This bug occuring around the time of the schema change isn't likely to be a
co-incidence. Hence me placing SBR in the spotlight.

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