tl;dr: Backport windows will shift earlier in the (UTC) day starting on
Mon, Feb 14th.
*Problem*
Some backport windows have few deployers, and windows are not evenly
distributed for global users—the window times slant US-centric.
*Solution*
tl;dr: we made a spreadsheet
<https://docs.google.com/spreadsheets/d/1-bMfSzzzNxaOswFgqxkGVhfBnTenYL0Rw8XW-bHmolQ/edit?pli=1#gid=690147374>
(Antoine
did, actually).
After discussing with backport and train deployers, we're shifting backport
window timeslots to:
1. Evenly distribute backport windows – the IST timezone had no good
time to deploy
2. Provide better deployer coverage – the late afternoon backport window
(which previously happened at 4pm Pacific) often had few deployers (and few
users)
Here's a schedule that will be live *Mon, Feb 14th *(my Valentine's day
present to you all)
- 08:00 UTC 🔙 Early Backport
- 14:00 UTC 🔙 Afternoon Backport
- 21:00 UTC 🔙 Evening Backport
Train
- 09:00 UTC 🚂 UTC-0 (Antoine) Train
- 19:00 UTC 🚂 UTC-7 (US) Train
Big(ish) Changes
- UTC-7 train is an hour earlier
- Swapped with the backport window so backport is now after train
- UTC-Early backport is much earlier
- UTC-Late backport is pretty early, too
<3
Tyler Cipriani (he/him)
Engineering Manager, Release Engineering
Wikimedia Foundation