JDK 7u2 Phase 2 repository

[Erik Trimble]

On 9/12/2011 2:35 PM, Dalibor Topic wrote:
> Hi,
>
> it's time to discuss the repository structure for 7u2 in phase 2 (aka stabilization), where only high priority
> fixes are allowed, as mentioned in our Repository Management Rule 3. [0]
>
> With this mail, I'd like to propose that we create only one, master, forest for OpenJDK 7u2 in phase 2,
> since we should expect only a small number of fixes to be acceptable for phase 2, and no integration forest.
>
> So, for this Project, I'd like to see us add the following repository:
>
> * http://hg.openjdk.java.net/jdk7u/jdk7u2 - 7u2 phase 2 OpenJDK master
>
> to be populated from hg.openjdk.java.net/jdk7u/jdk7u OpenJDK JDK 7 Updates mainline
>
> Phase 2 changes on code in OpenJDK would go here first, and get synced by the integrator to the jdk7u OpenJDK JDK 7 Updates mainline.
>
> Note: there is no separate integration forest in OpenJDK for 7u2 phase 2.
>
> Let me know if you have comments on this proposal on this mailing list by Wednesday.
>
> Finally, thanks to Abhijit Saha and Edvard Wendelin for their work on creating and reviewing this proposal.
>
> cheers,
> dalibor topic
>
> [0] http://openjdk.java.net/projects/jdk7u/repos.html

Honestly, I think the only thing that people should be aware of is that 
syncing from 7uN back into 7u on a fix-by-fix basis (rather than at the 
end of the 7uN cycle, or even after every 7uN build) results in a bit of 
muddy history inside the 7u repository.

I'm not saying this is bad (or, frankly, even avoidable), but just be 
aware that the HISTORY for 7uN and 7u will not line up nicely, which 
means that for subsequent 7uN+2 (or whatever) release, the history ISN'T 
going to line up nicely as 7uN + another whole number of fixes. It's 
going to be 7u (at the time of the 7uN fork), plus the 7uN and 7u-only 
fixes interspersed.

About the only way I could see avoiding this is to wait until a 7uN 
release is finished, then (and ONLY then) sync back into the 7u line, 
using the 'rebase' option.  I find this option significantly worse than 
the proposed method, for obvious reasons.

I also second the existence of a Master-only (no Integration) forest for 
the 7uN releases. The number of fixes is limited, and the extra 
Integration forest really buys us no additional benefit.


-Erik Trimble
trims at netdemons.com