Change Details

1. The ALTER TABLEs to run: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/GlobalBlocking/+/f5e396266f288c9732bc8ed65709324a9b207be6/sql/mysql/patch-add-gb_by_central_id.sql 2. Where to run those changes: centralauth database only 3. When to run those changes: when dba has time 4. If the schema change is backwards compatible: yes, only adds a nullable column 5. If the schema change has been tested already on some of the test/beta wikis. Usually, as a last test, change should be applied to testwiki first: Tested locally 6. If it involves new columns or tables, if the data should be made available on the labs replicas and/or dumps or not because they contain private or sensitive data: No

1. The ALTER TABLEs to run: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/GlobalBlocking/+/f5e396266f288c9732bc8ed65709324a9b207be6/sql/mysql/patch-add-gb_by_central_id.sql 2. Where to run those changes: centralauth database only 3. When to run those changes: when dba has time 4. If the schema change is backwards compatible: yes, only adds a nullable column 5. If the schema change has been tested already on some of the test/beta wikis. Usually, as a last test, change should be applied to testwiki first: Tested locally 6. If it involves new columns or tables, if the data should be made available on the labs replicas and/or dumps: Yes

1. The ALTER TABLEs to run: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/GlobalBlocking/+/f5e396266f288c9732bc8ed65709324a9b207be6/sql/mysql/patch-add-gb_by_central_id.sql 2. Where to run those changes: centralauth database only 3. When to run those changes: when dba has time 4. If the schema change is backwards compatible: yes, only adds a nullable column 5. If the schema change has been tested already on some of the test/beta wikis. Usually, as a last test, change should be applied to testwiki first: Tested locally 6. If it involves new columns or tables, if the data should be made available on the labs replicas and/or dumps or not because they contain private or sensitive data: No: Yes