Review Board 4.0 Beta 1: Multi-Commit Review Requests and Much More

Review Board 4.0 is nearly ready to ship, after much development and testing. With the addition of multi-commit review requests for Git and Mercurial, Discord and Jenkins CI integration, and review and administrative capabilities, this is a release that we're very proud of.

We're opening this up to beta testers before we ship the final 4.0, and would like your feedback.

Let's look at the highlights.

Multi-Commit Review Requests

Git and Mercurial users can now create review requests covering multiple commits at once. Reviewers can review each commit individually, all commits squashed together, or a portion of the commits squashed together.

RBTools 2.0 or higher is required to post or land multi-commit review requests.

Discord and Jenkins CI

Prefer Discord over Slack? Jenkins over CircleCI?

Your review request updates and discussions can now be posted to Discord to keep your group informed. Jenkins can take on building and testing your code, posting feedback to your review request.

More integrations are on their way for 4.0.

New Administration UI

We've rebuilt the administration UI from the ground up. It's mobile-friendly, cleaner, with far better management of integrations and extensions.

Read-only Mode

Planning some maintenance? You can now put the server into read-only mode. People can still browse review requests and code, but they won't be able to change anything until your maintenance is complete.

Python 3 and Django 1.11

Review Board 4.0 beta 1 can be installed on Python 3.6 through 3.9. Or on 2.7, if you're not ready to make the upgrade.

We've also upgraded to Django 1.11. This will matter if you have in-house extensions, as much has changed. Fortunately, we've helped with some porting information, which you'll find in the release notes.

Plus More

It's a big release, and we've covered it all in the release notes, along with installation/upgrade instructions. Please upgrade only on a test installation for now, and not on your production server.

Give it a try and let us know what you think or if you hit any problems.

Review Board 3.0.19: New Features for Review Bot, API, and More

Review Board 3.0.19 enables new options for Review Bot, introduces a new experimental interdiff algorithm, enhances compatibility with several types of repositories, and improves the repository creation API.

Some New Review Bot Options

Review Bot users now have access to several new options.

Configured code checkers can now be set to run only on demand, by button click, which is useful for ones that take a very long time to run.

Failed builds can be retried, in case the failure was caused by a temporary issue.

Open issues piling up? Tools can now be set to drop all previously-opened issues they've filed the next time the tool is run, starting fresh.

A New Interdiff Algorithm

Some people have hit odd edge cases with interdiffs, where some lines seemed to be missing. This was due to a problem with the old algorithm, which we've been working out.

A new algorithm is coming in Review Board 4.0. If you're plagued by interdiff issues, you can preview this by setting the following in conf/

    'diffviewer.filter_interdiffs_v2': True,

You’ll then need to restart your web server and clear memcached. We recommend trying this on a non-production server.

Better API-Based Repository Management

The Repository API can now create repositories backed by hosting services, such as GitHub or GitLab. It's no longer limited to plain, self-hosted repositories.

This is pretty advanced, but often requested. We're working on documentation, but in the meantime, reach out if you need assistance.


  • SSL fixes for Perforce
  • Diff parsing fixes for Git and Mercurial
  • Lookup fixes for JIRA
  • Posting fixes for complex repository setups
  • Authentication fixes for WebHooks
  • Rendering fixes when publishing replies to reviews
  • Saving fixes after copying-and-pasting into a text field

And more.

The full list of changes are in the release notes.