Change Details

The high-level checklist: [X] 1. Merge the first patch for {T167246} (adding new schemas and code) [X] 1.1. Check deployed extensions for needed updates. [X] 2. Perform schema change (T188299) [X] Interrupt: Remove read-both ([[https://gerrit.wikimedia.org/r/c/mediawiki/core/+/461440|gerrit:461440]]) [X] 3. Turn the feature flag to "write both, read old". See if stuff breaks. [ ] 4. Run the maintenance script(s) to migrate all the old stuff to new stuff. [ ] s1 [x] s2 [x] s3 [ ] s4 [ ] s5 [x] s6 [x] s7 [x] s8 [ ] 5. Turn the feature flag to "write both, read new". See if stuff breaks. [ ] 5.1. Announce the pending change to wikitech-l@ and cloud@, and give time for people to update. [ ] 5.2. Make sure all deployed extensions are updated. [ ] 6. Turn the feature flag to "new only". [ ] 7. Merge the second patch for T167246 (removing old schemas and code) [ ] 7.1. Submit schema change (task TBD)

The high-level checklist: [X] 1. Merge the first patch for {T167246} (adding new schemas and code) [X] 1.1. Check deployed extensions for needed updates. [X] 2. Perform schema change (T188299) [X] Interrupt: Remove read-both ([[https://gerrit.wikimedia.org/r/c/mediawiki/core/+/461440|gerrit:461440]]) [X] 3. Turn the feature flag to "write both, read old". See if stuff breaks. [ ] 4. Run the maintenance script(s) to migrate all the old stuff to new stuff. [ ] s1 [x] s2 [x] s3 [ ] s4 [x] s5 [x] s6 [x] s7 [x] s8 [x] wikitech [ ] 5. Turn the feature flag to "write both, read new". See if stuff breaks. [ ] 5.1. Announce the pending change to wikitech-l@ and cloud@, and give time for people to update. [ ] 5.2. Make sure all deployed extensions are updated. [ ] 6. Turn the feature flag to "new only". [ ] 7. Merge the second patch for T167246 (removing old schemas and code) [ ] 7.1. Submit schema change (task TBD)

The high-level checklist: [X] 1. Merge the first patch for {T167246} (adding new schemas and code) [X] 1.1. Check deployed extensions for needed updates. [X] 2. Perform schema change (T188299) [X] Interrupt: Remove read-both ([[https://gerrit.wikimedia.org/r/c/mediawiki/core/+/461440|gerrit:461440]]) [X] 3. Turn the feature flag to "write both, read old". See if stuff breaks. [ ] 4. Run the maintenance script(s) to migrate all the old stuff to new stuff. [ ] s1 [x] s2 [x] s3 [ ] s4 [ x] s5 [x] s6 [x] s7 [x] s8 [x] wikitech [ ] 5. Turn the feature flag to "write both, read new". See if stuff breaks. [ ] 5.1. Announce the pending change to wikitech-l@ and cloud@, and give time for people to update. [ ] 5.2. Make sure all deployed extensions are updated. [ ] 6. Turn the feature flag to "new only". [ ] 7. Merge the second patch for T167246 (removing old schemas and code) [ ] 7.1. Submit schema change (task TBD)