Re: [wtp-pmc] 3.2 release train proposal

[Arthur Ryman <ryman@xxxxxxxxxx>]

Tim,

I think we should consider parallel
streams for 1.0 and 1.5 in any case because 1.0 is limited to API development.
We need to defer most enhancements to 1.5, but we don't want to prevent
work from starting on 1.5. For example, the proposal from Gary Horen to
add XML enhancements is a 1.5 item and he won't be working on the 1.0 items
AFAIK.

Yes, parallel streams incur overhead,
but I think we need to learn how to do it.

I think WTP 1.0 should be an Eclipse
3.1-only release. We are not totally API clean yet and there is no guarantee
that a single 1.0 code base would run on both 3.1 and 3.2.

Arthur Ryman,
IBM Software Group, Rational Division

blog: http://ryman.eclipsedevelopersjournal.com/
phone: +1-905-413-3077, TL 969-3077
assistant: +1-905-413-2411, TL 969-2411
fax: +1-905-413-4920, TL 969-4920
mobile: +1-416-939-5063, text: 4169395063@xxxxxxx

"Tim Wagner" <twagner@xxxxxxx>
Sent by: wtp-pmc-bounces@xxxxxxxxxxx

08/23/2005 01:29 PM

Please respond to
"WTP PMC communications (including coordination, announcements,  and Group discussions)"

To	"WTP PMC communications (including coordination, announcements,  and Group discussions)" <wtp-pmc@xxxxxxxxxxx>
cc
Subject	[wtp-pmc] 3.2 release train proposal

Apologies for missing the WTP PMC telecon
this morning due to the overlap with the Eclipse Planning Council meeting.
It included an in-depth conversation about joining the 3.2 “train” along
with our prerequisites. The table below is a suggestion of how this might
work, followed by some of the more obvious challenges it would entail.
(Specific dates haven’t been agreed to, and the extended twilight period
needs better definition in terms of how it would contain the converged
stack rampdown.) One of the important takeaways is the need to begin synchronizing
with milestone releases early on – note that in this proposal WTP joins
the 3.2 “train” no later than mid November.
 
Sample train calendar (final dates and
dependency staging TBD):

Date	Meaning	EMF/GEF/VE/DTP	WTP/TPTP/BIRT	Notes
8/12/2005	M1	N/A	N/A	Skipped
9/23/2005	M2	+1 week	N/A	EMF/GEF/VE/DTP? join train
11/4/2005	M3	+1	+2	WTP/TPTP/BIRT join train
12/16/2005	M4	+3	+4	Delayed stack release due to xmas holiday
2/15/2006	M5/API freeze	+1	+2	First time WTP 1.5 functionality / 3.2 feature adoption occurs.
4/1/2006	RC0/FC	+1/2	+1
5/15/2006	Final RC/CC	+1/4	+1/2
6/30/2006	Joint stack GA	+0	+0

Risks to/Requirements on WTP:

• Requires our 1.0 release to simultaneously adopt/test prereq M3/4 releases within a specified timeframe. (Alternative: fork code and have dual 1.0/1.5 code streams with all the associated overhead.) The expectation is that we would only integrate with platform releases prior to 12/15; new features would only be picked up post our 1.0 release.
• Adjustment to our previously proposed 1.0 and 1.5 milestone and release dates will be required to align.
• Our timeframe to define our proposed 1.5 (platform 3.2) APIs is short – we need to declare by end of February ’06. Subsequent to that, we need to manage and publicize breaking API changes prior to releasing.

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