I just reread your email and realized that I said "no", but my final
paragraph is the real response to exactly what you asked. :)

So yes, adding the relationship can cause the order to change.


On Wed, Aug 28, 2013 at 3:56 PM, Andy Parker <[email protected]> wrote:

> On Wed, Aug 28, 2013 at 3:22 PM, Luke Kanies <[email protected]> wrote:
>
>> On Aug 28, 2013, at 12:38 PM, Andy Parker <[email protected]> wrote:
>>
>> On Wed, Aug 28, 2013 at 10:20 AM, Luke Kanies <[email protected]>wrote:
>>
>>> On Aug 28, 2013, at 8:45 AM, Andy Parker <[email protected]> wrote:
>>>
>>> >   * #8040 - anchor pattern. I think a solution is in sight, but it
>>> didn't make 3.3.0 and it is looking like it might be backwards incompatible.
>>>
>>> Why would it be incompatible?
>>>
>>> That implies that we can't ship it until 4.0, which would be a tragedy
>>
>> worth fighting hard to avoid.
>>>
>>>
>> The only possible problem, that I know of, would be that it would change
>> the evaluation order. Once things get contained correctly that might cause
>> problems. We never give very strong guarantees between versions of puppet,
>> but given the concern with manifest order, I thought that I would call this
>> out as well.
>>
>>
>> Do you mean, for 2 classes that should have a relationship but currently
>> don't because of the bug (and the lack of someone using an anchor pattern
>> to work around the bug), fixing that bug would cause them to have a
>> relationship and thus change the order?
>>
>>
> No that shouldn't be a problem. I think we will be using making the
> resource syntax for classes ( class { foo: } ) create the containment
> relationship. That doesn't allow multiple declarations and so we shouldn't
> encounter the problem of the class being in two places.
>
>
>> That is, you're concerned that the bug has been around so long it's
>> considered a feature, and thus we can't change it except in a major release?
>>
>>
> More of just that the class will start being contained in another class
> and so it will change where it is evaluated in an agent run. That could
> cause something that worked before to stop working (it only worked before
> because of random luck). I'm also, right now, wondering if there are
> possible dependency cycles that might show up. I haven't thought that one
> through.
>
>
>>  --
>> Luke Kanies | http://about.me/lak | http://puppetlabs.com/ |
>> +1-615-594-8199
>>
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>
>
>
> --
> Andrew Parker
> [email protected]
> Freenode: zaphod42
> Twitter: @aparker42
> Software Developer
>
> *Join us at PuppetConf 2014, September 23-24 in San Francisco*
>



-- 
Andrew Parker
[email protected]
Freenode: zaphod42
Twitter: @aparker42
Software Developer

*Join us at PuppetConf 2014, September 23-24 in San Francisco*

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