1913734 - [Fission] Setup Fission Nimbus Experiment Instrumentation

Status: RESOLVED FIXED

(GeckoView :: General, task, P2)

Description

[Olivia Hall [:olivia]]

This bug is to instrument Fission for a Nimbus experiment or rollout.

We will need to find a way to set enviromental variables or else find a way to set the preferences before Gecko is initialized. Connections will need to be setup in Fenix, GeckoView, and Gecko. Will be similar to requirements in bug 1913733, but for the fission side.

Comment 1

[Olivia Hall [:olivia]]

Control:

• Fission - off

Experiment:

• Fission - on
• Strategy - IsolateHighValue

Comment 2

[Olivia Hall [:olivia]]

Attachment: Bug 1913734 - Setup Fission Nimbus Experiment Instrumentation for Android

This patch sets up the Nimbus fission experiment:

• Defines fission.enabled in nimbus.fml.yaml
• Sets fission value based on experiment on GeckoRuntimeSettings builder
• Sets the default WebContentIsolationStrategy of IsolateHighValue for fission

Comment 3

[Olivia Hall [:olivia]]

For testing:

nimbus-cli --app fenix --channel developer test-feature fission --no-validate /file/path/fission-enabled-false.json

fission-enabled-false.json:

{
  "enabled": false
}

nimbus-cli --app fenix --channel developer test-feature fission --no-validate /file/path/fission-enabled-true.json

fission-enabled-true.json:

{
  "enabled": true
}

After nimbus cli launches, close and reopen app, and check about:config for fission.autostart to match the fission status. (Note: An app reopening is required for the changes to take effect.)

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/d063510b858e
Setup Fission Nimbus Experiment Instrumentation for Android r=android-reviewers,petru,owlish

Comment 5

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/d063510b858e