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Issue metadata

Status: Duplicate
Merged: issue 812784
Owner:
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug



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Non-optimal rebaseline result from webkit-patch rebaseline-cl

Project Member Reported by wangxianzhu@chromium.org, Feb 23 2018

Issue description

What steps will reproduce the problem?
(1) git cl patch --force https://chromium-review.googlesource.com/c/chromium/src/+/929878/4
(2) webkit-patch rebaseline-cl --patchset=4

What is the expected result?
The common baseline 
third_party/WebKit/LayoutTests/http/tests/devtools/layers/layer-canvas-log-expected.txt should be updated because all platforms produced the same new result.

What happens instead?
The script left the common baseline unchanged (which is stale), and added two new baselines (which are the same) for win and mac10.12.

Also saw similar situation when I enabled SlimmingPaintV175 for experimental (https://chromium-review.googlesource.com/c/chromium/src/+/917226). Saw many mac10.12-specific new baselines which looked unnecessary.
 
I didn't deploy the fix I made for the test results server until this morning at around  9:35 AM Pacific time, so if you ran a command before then, you might want to try re-running it.
I just tried the reproduction steps, and the script still create non-optimal baselines. So this bug seems unrelated to the test results server issue.
Is the non-existence mac10.13 platform the culprit? The script seems to think that mac10.13 still produce the same old result, so created mac10.12 baseline for tests that actually produced the same results on all platforms.
Cc: robertma@chromium.org
Re #3: yes. I think this is  issue 812784 .

Mac 10.13 trybot has been added to rebaseline-cl recently, which is supposed to fix the problem. Could you try rebasing your local branch (to get the up-to-date rebaseline-cl) and running rebaseline-cl again? If that solves the problem, please mark this issue as a duplicate of  issue 812784 . Otherwise, I'll take another look. Thanks!
Mergedinto: 812784
Status: Duplicate (was: Assigned)

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