After {T190444} It would be great to apply this change
From the checklist at https://wikitech.wikimedia.org/wiki/Schema_changes:
# **ALTERs to run:** <https://gerrit.wikimedia.org/r/#/c/432632/5/maintenance/archives/patch-change_tag-tag_id.sql>
# **Where to run those changes:** all.dblist
# **When to run those changes:** //?//
# **If the schema change is backwards compatible:** Yes.
# **If the schema change has been tested already on some of the test/beta wikis:** Tested in beta cluster
# **if the data should be made available on the labs replicas and/or dumps:** Yes, data in this table is public (unless the wiki is private which we don't replicate at all)
This column will be empty and we won't write to it immediately
Schema change progress:
[] s1
** [x] codfw
** [] eqiad progress T195193#4275247 (only primary master pending, but it will be failed over the 18th July - so it will get done that day T197069)
[] s2
** [x] codfw
** [x] eqiad progress T195193#4312199
[] s3
** [] codfw
** [] eqiad
[] s4
** [x] codfw
** [x] eqiad progress T195193#4270989
[] s5
** [x] codfw
** [x] eqiad progress T195193#4248160
[] s6
** [x] codfw
** [x] eqiad progress T195193#4260471
[] s7
** [x] codfw
** [] eqiad progress T195193#4387332
[] s8
** [x] codfw
** [] eqiad progress T195193#4320911