QA/Desktop Firefox/Releases/Effect Of Uplifts
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Contents
Effect of Uplifts
Point Release Drivers
- Firefox 23.0.1:
- bug 901944 caused by bug 847267 which landed on mozilla-central on 2013-05-05 and rode the trains
- bug 902532 caused by bug 857830 which landed on mozilla-central on 2013-05-07 and rode the trains
- bug 901527 caused by bug 886886 which landed on mozilla-central on 2013-07-22 and was uplifted to mozilla-beta and mozilla-aurora after only 5 hours on Nightly
- Firefox 20.0.1:
- bug 857291 caused by bug 807678 which landed on mozilla-central on 2012-12-24 and rode the trains
- bug 846848 caused by OS.File not being on QA's radar as it rode the trains
Landings per Channel
The following shows when a bug was fixed (based on the state of the status flag during the 6-week period).
Firefox Version | Nightly | Aurora | Beta | % Uplifts | Point Releases |
10 | 113 | 170 | 128 | 73% | 2 |
11 | 90 | 713 | 283 | 92% | 0 |
12 | 356 | 332 | 150 | 58% | 0 |
13 | 207 | 316 | 214 | 72% | 1 |
14 | 306 | 506 | 279 | 72% | 1 |
15 | 340 | 563 | 381 | 74% | 1 |
16 | 397 | 460 | 275 | 65% | 2 |
17 | 353 | 563 | 420 | 75% | 1 |
18 | 532 | 1069 | 545 | 75% | 2 |
19 | 853 | 857 | 332 | 58% | 2 |
20 | 783 | 644 | 408 | 57% | 1 |
21 | 844 | 514 | 277 | 48% | 0 |
22 | 550 | 472 | 247 | 57% | 0 |
23 | 683 | 484 | 360 | 55% | 1 |
24 | 600 | 494 | 400 | 60% | 0 |
Average | 467 | 544 | 313 | 66% | 1 |
Conclusions & Analysis
- Uplifts account for ~66% of all fixes going into a given release
- All versions requiring at least one point release occurred when uplifts accounted for 55% or more of the fixes
- All versions requiring at least two point releases occurred when uplifts accounted for ~60% or more of the fixes
- Hypothesis: volume of landings is increasing instability (ie. likelihood of needing a follow-up release)