RFC: JDK 9 Sandbox Forest Proposal

[Mike Duigou]

On Sep 22 2014, at 01:38 , Volker Simonis <volker.simonis at gmail.com> wrote:

> On Sun, Sep 21, 2014 at 4:41 PM, David Chase <david.r.chase at oracle.com> wrote:
>> 
>>> - All development happens on branches.
>> 
>> It would be lovely to have a short tutorial on how we do
>> this written up and put in an easy-to-access place.
>> Branching still makes me nervous.
>> 
> 
> I'm also not familiar with branches. How do branches work in a
> Mercurial forest? Is it possible to easily develop on a branch if you
> need to push to different repositories within the whole sandbox forest
> (i.e. hotspot and jdk). Is it somehow possible to enforce the smae
> branch on all the repos in a forest?

There is no specific support for branching across forests. This will need to be managed manually unless extensions like trees [1] can be adapted to do the necessary management across all repos.

> I agree that the OpenJDK project
> process is much too heavyweight for many smaller project, but in the
> end you always get a complete forest. I'm just curious if cross
> repository changes can be easily developed with branches.

Though you do end up with a complete forest most patches/features only make changes in a single repo. For some people YMMV significantly of course. I expect that most people will only need to work with a single repo. 

Mike

[1] http://hg.openjdk.java.net/code-tools/trees/raw-file/tip/trees.py


> Thanks,
> Volker
> 
>> David
>>