The day has come. We now can drop this table in favor of change_tag table.
- SQL to run: DROP TABLE tag_summary (https://gerrit.wikimedia.org/r/#/c/479266/)
- Where to run those changes: all.dblist
- When to run those changes: any time would work
- If the schema change is backwards compatible: No.
- 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: No