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Re: [mpc-dev] Critical Bug in MPC

Hi all,


(a) the properties can be set on the EPP packages in time for RC2, we can test it from Friday on.
(b) the properties cannot be set in time for RC2, we can test the nightly EPP packages based on the Eclipse Platform RC3 build on Saturday.

Both options give us some time for possible corrections, and the time left for testing is in both cases very similar. Regarding (a) I see some potential problems that we discussed / are going to discuss in the bugs below.

All in all I am still very confident that we can implement a solution for this problem in time. You are right that this could turn into a very serious issue, but we are aware of that and working on it.


On Mon, May 27, 2013 at 7:39 PM, Pascal Rapicault <pascal@xxxxxxxxxxxxx> wrote:

I would like to add a little bit of nuance to that.

The bug itself is not in the MPC code but is a caused by a missing flag in
all EPP packages. This problem has been known since May 1st but nobody had
the chance to address this yet

Now if instead of an EPP package you try MPC on top of Eclipse Platform
SR1 then MPC works just fine. I understand that this is not the setup in
which most ppl are running MPC but from a code pov the same code is
running so this is enough to do plenty of testing.

I understand that this brings some concern about the remediation support
in p2 but the code has been stable and tested by many ppl (including JBoss
itself) and through automated tests. For complete disclosure, I admit that
there is an RC3 improvement that is suggested here
( but this is done to
help mitigate a setup that none of the p2 committers thought about, and
this issue could be completely addressed by the producer of a product.

So now the question you are all asking is can we do something for RC2? The
answer is yes. Basically we can tweak the p2 metadata generated for the
EPP package to include the necessary flag. This is the technique that has
been done by the platform team to deal with the same issue and is
therefore known to work.

Hope this help clarify the situation,


On Mon, May 27, 2013 11:46, Ian Skerrett wrote:
> All,
> I'd like everyone interested in MPC, including other marketplace
> providers,
> to be aware of a critical bug in MPC. The new p2 remediation feature can
> creating situations where the Eclipse installation is not usable. A fix
> will
> be provided for RC3 but that gives very little time for testing.
> Please take a look at bug 409019
> <>  and raise any
> issues
> on this bug. It would also be useful to have the other Marketplace
> providers
> to do some testing and comment on the bug or this mailing list.
> Thanks
> Ian
> _______________________________________________
> mpc-dev mailing list
> mpc-dev@xxxxxxxxxxx

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