HomePhabricator

ActorMigration: Remove possibility of read-both

Description

ActorMigration: Remove possibility of read-both

When this was originally written, the plan was to read both the old and
new fields during the transition period, while stopping writes to them
midway through. It turns out that the WHERE conditions to do read-both
correctly are generally not handled well by the database and working
around that would require a lot of complicated code (see what's being
removed from ApiQueryUserContribs here, for example).

We can simplify things greatly by instead having it write both fields
during the transition period, reading from the old for the first part
and the new for the second part, as is being done for MCR.

Bug: T204669
Change-Id: I4764c1c7883dc1003cb12729455c8107319f70b1
Depends-On: I845f6ae462f2539ebd35cbb5f2ca8b5714e2c1fb
Depends-On: I88b31b977543fdbdf69f8c1158e77e448df94e11

Details

Provenance
AnomieAuthored on Sep 18 2018, 6:21 PM
tstarlingCommitted on Oct 11 2018, 1:12 AM
Parents
rMWc9b599ababfa: HTMLInfoField: Undo breaking change, deprecate instead, add release notes
Branches
Unknown
Tags
Unknown
ChangeId
I4764c1c7883dc1003cb12729455c8107319f70b1