CODEWITHSUNDEEP
google-chromerollout
Alex
Alex

Reputation: 35118

Detect Chrome phased rollouts

How can phased rollouts be debugged in Chrome? Is there a screen which shows "you are in rollout group A" or B ?

Same #Chrome Version 70.0.3538.102 (Official Build) (64-Bit) version, for me the cert does not work (first screenshot), for my colleague it still does (second screenshot).

The About Screen shows the same version.

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Upvotes: 2

Views: 59

Answers (1)

Josh Lee
Josh Lee

Reputation: 177715

Unfortunately, this is (intentionally) difficult.

Since you know exactly what feature is causing trouble, you can force it with either --enable-features=LegacySymantecPKI or --disable-features=LegacySymantecPKI.

If you want to roll the dice, that's --reset-variation-state, and you can view the current variations at chrome://version. Since the variation state only has 13 bits of entropy1, there will be a large overlap in which variations are toggled together, so you'll have a hard time determining which hashed feature in this list corresponds to LegacySymantecPKI, Disabled, and Enabled.

There's a feature request to show the unhashed field trial names: https://crbug.com/653634.

There's a design doc for the hashing here: https://cs.chromium.org/chromium/src/components/variations/variations_murmur_hash.h

Upvotes: 3

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