tree 7ddd262cf66a48e7f1c5527f98f9a5d057b457dd
parent dbdcb7bc5b5688c7a7597e545a06197d694d4c3a
author Antonio Barone <syntonyze@gmail.com> 1601657670 +0200
committer Antonio Barone <syntonyze@gmail.com> 1601890288 +0200

Ensure All-Users:refs/meta/external-ids doesn't cause split-brains

The DESIRED policy was introduced in the early stages of the multi-site
to work around locking problems with the global ref-database, which have
later been fixed with the introduction of a locking mechanism[1].

Due to the concurrent nature of All-Users:refs/meta/external-ids, the
DESIRED policy had been applied by default to avoid causing continuous
client failures.

The DESIRED policy however, is obsolete and prone to cause spit-brains
due to the fact that nothing, really, is done to prevent them: this
should not be applied to a crucial core ref such as
refs/meta/external-ids.

Remove DESIRED policy (that was only used for
All-Users:refs/meta/external-ids) and instead make sure that it is
REQUIRED to be in sync with the global ref-database.

[1] I5395c22ffdf87fcc3247ea9a5d3afc57df60cfe9

Bug: Issue 13462
Change-Id: I6c8fb571e5467fd5596fb8ee1fcdf0179350a051