Explore the journey of Facebook's transition from Git to Mercurial, uncovering the technical and social dynamics that influenced one of the tech industry's pivotal decisions in source control management. This post delves into the reasons behind Facebook's shift, the challenges of scaling Git, and the pivotal role of community and collaboration in adopting Mercurial
If I had to guess I’d say it’s because fundamentally Facebook development is about deploying servers.
As you move through the main branch, at any commit, you should have something that you can deploy. The moment you split the repo you lose this, and need to worry about keeping multiple repos aligned.