The JDK 9 project is experimenting with the idea of Submission Forests. A Submission Forest allows committers to submit a change for automatic build, test and integration with an upstream forest. Initially we have created a jdk9/hs-submit forest which integrates to jdk9/hs. This will allow non-Oracle committers to make changes to jdk9/hs directly while still observing the Hotspot team's conventions for pre-integration build & test. Of course all the usual rules about who may make changes and how they are reviewed and approved still apply.
Submission Forests are modeled after the JDK9 Sandbox Forest. The default branch of the Submission Forest is kept in sync with the upstream forest. Committers do their work on branches. When a branch is pushed to the Submission Forest, it is automatically run through a pre-defined set of builds and tests. If this succeeds, the work on the branch is moved to the upstream forest as a single changeset to the default branch and an email message is sent to the committer. If the work fails to build, pass all tests or merge successfully into the upstream forest, no changes are made upstream and an email is sent to the committer.
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