Apache GitBox provides the Thrift project more control over the lifecycle of pull requests and improve the team's ability to get things done in a timely manner. The goal is to improve team self-service in GitHub and integrated CI workflows. One important improvement for committers is that it allows them to "Rebase and Merge" directly in GitHub, assuming the commit description meets published guidelines. It also allows for more control over GitHub features such as issues (note there are no plans to switch from Apache Hira to GitHub Issues right now), and it allows pull requests to be assigned to committers and labelled.
I found one discussion link for reference from another Apache project considering conversion back in July 2017: http://apache-nifi.1125220.n5.nabble.com/DISCUSS-Apache-Gitbox-td18273.html Please VOTE: [ ] +1 Move to Apache GitBox [ ] +0 [ ] -1 Don't move to Apache GitBox because... Voting will end in 72 hours (excluding the weekend), March 26, 2018 at 9:00:00 AM EDT https://www.timeanddate.com/countdown/to?iso=20180326T09 - Jim King (PMC Member)