There has been some great discussion here, and some similar ideas to what 
were discussed at the Planning Council F2F earlier this year [1]. Many 
Eclipse projects are already doing 3-6 or even more releases a year, so 
ideas about how to bring those together and get them out to end-users are 
worth talking about. My current view is that we are already slowly 
evolving from the "one feature release a year" to three release windows a 
year (June, September, February). Some projects use those release windows 
for maintenance, others use them for new "feature releases". This makes 
sense as our projects are very diverse and the needs of different 
projects' consumer communities differ. We discussed this briefly in last 
week's Eclipse Project PMC and we currently think the 1+2 rhythm currently 
works well for the Platform project, but there is nothing stopping other 
projects from adopting a more frequent feature release cadence. Maybe we 
need to acknowledge this reality and change the names of the 
September/February releases to indicate they are not purely service 
releases (and yes, Spring/Summer/Fall are not the right names either).

As for the specific idea of a December release, I admit I'm not wild on 
it. The last couple of weeks of December is really a poor time to be 
shipping software, both from perspective of people being on holidays, and 
from a marketing perspective it's hard to get anyone's attention at that 
time of year. Perhaps a bit more achievable is moving the September 
release to end of October, to make it a consistent pattern of release 
windows every four months. That also lines up nicely around EclipseCon 
Europe which is a big marketing and education opportunity if you're doing 
a release at that time of year. Again, not every project would need to use 
these windows for feature releases. A project could make every second 
window a feature release and use the in-between ones for maintenance. Or 2 
feature releases + 1 maintenance release, etc. Again this is something 
projects are already moving towards and it is mainly a matter of 
socializing and outreach about what the Sept/Feb releases are doing. The 
next natural step from 3 release windows a year would be quarterly 
releases but this is a bigger step for projects and the community to make.

Konstantin's thought experiment about continuous aggregation is also 
really interesting. The key problem here is workload - our current 
aggregation is too error prone, unrepeatable, and time-consuming to add 
even more aggregations right now. It currently seems to take several full 
days of someone's time to nurse an aggregation through to successful 
completion. Part of this can probably be removed through better tooling 
and automation, but some of it may be the natural cost of getting so many 
millions of lines of fast moving open source code lined up, built, and 
tested. I think we need to improve infrastructure+process before we can 
increase how often we release aggregated content. 

The other question for the continuous aggregation idea is to ask who is 
the target audience for it.  If the goal is to get new features into the 
hands of users more quickly, then I think using the current nearly-monthly 
milestone aggregation is the better path. This gets new features out even 
faster, and also means that users get exposure to features early enough 
that projects can incorporate feedback before it is too late. The 
Chrome/Firefox Beta channel concept is very popular with developers - they 
are eager to get their hands on new stuff and are often willing to 
sacrifice a bit on quality to get it. The Eclipse community is much 
smaller but I still think there would be interest if we get the word out 
and set the right expectations. Personally I am never using anything older 
than the last milestone and overall stability is quite good. 

On the other hand if the target audience for continuous aggregation is 
commercial adopters, I think it is much less valuable. What commercial 
adopters really value is the schedule alignment, and whether there is an 
aggregate repository and EPP packages or not is a relatively minor 
concern. Anyone building against Eclipse would likely not want to target a 
repository that is shifting every month in unpredictable ways - they 
generally want to control the timing of adoption by consuming from the 
individual repositories of single project releases.

Anyway, that was a bit more verbose and rambling than I intended, but 
that's my current input to the discussion...

John


[1] 
http://wiki.eclipse.org/Planning_Council/March_24_2013#Release_train_rhythm



From:   Doug Schaefer <dschae...@qnx.com>
To:     "cross-project-issues-dev@eclipse.org" 
<cross-project-issues-dev@eclipse.org>, 
Date:   07/02/2013 03:31 PM
Subject:        [cross-project-issues-dev] 6 month release cycle
Sent by:        cross-project-issues-dev-boun...@eclipse.org



Hey gang, 

We have a discussion going in the CDT community and we are currently 
planning out how to achieve a 6 month release cycle. The feeling is that 
we need to get new features out faster to our users. The year long wait we 
currently have is making releases sluggish and I fear it's slowing down 
growth in our community. A 6 month cycle should infuse us with a little 
more energy, so goes the hope.

I mentioned CDT's plans on twitter and a number of senior members of our 
larger Eclipse community thought it might be a good idea for other 
projects at Eclipse and maybe for the train itself. And I think so too.

Instead of continuing that discussion on twitter, which is fun and 
everything, I thought we should bring that to a greater audience and see 
what other projects thought and whether it's something we should bring to 
the Planning Council and the rest of the EMO.

I know there are a number of projects already releasing off stream during 
the year, but bringing things together more often might be a help to many 
others. But I'd like to hear your thoughts on that.

Doug._______________________________________________
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