From the checklist at https://wikitech.wikimedia.org/wiki/Schema_changes:
# **ALTERs to run:** https://gerrit.wikimedia.org/r/c/mediawiki/core/+/537694/4/maintenance/archives/patch-rename-mysql-user_newtalk-indexes.sql
# **Where to run those changes:** all.dblist
# **When to run those changes:** No time constraint.
# **If the schema change is backwards compatible:** Yes. Nothing accesses these indexes by name.
# **If the schema change has been tested already on some of the test/beta wikis:** It appears to have been auto-deployed to Beta. No error reports.
# **If the data should be made available on the labs replicas and/or dumps:** N/A, no new data is being added here.
Progress:
[] s1
** [x] codfw
** [] eqiad progress T234066#5691986
[x] s2
** [x] codfw
** [x] eqiad progress T234066#5578397
[] s3
** [] codfw
** [] eqiad
[] s4
** [x] codfw
** [] eqiad
[x] s5
** [x] codfw
** [x] eqiad T234066#5655647
[x] s6
** [x] codfw T234066#5543365
** [x] eqiad T234066#5543365
[x] s7
** [x] codfw
** [x] eqiad progress T234066#5571999
[x] s8
** [x] codfw
** [x] eqiad T234066#5671878
[x] labswiki
[x] labtestwiki