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Subject: [alpine-devel] Re: Dangerous build configuration in Alpine Linux port of MongoDB
From: Marc Vertes <mvertes@free.fr>
In-Reply-To: <CAMW1i2UB5s82AKksjTqU2svg2fx7bpAQcNXOEpB0naF-4orc7A@mail.gmail.com>
Date: Wed, 18 Apr 2018 22:42:49 +0200
Cc: filipp.andronov@gmail.com,
 alpine-devel@lists.alpinelinux.org
Content-Transfer-Encoding: quoted-printable
Message-Id: <3B237E01-4A49-49E0-B23A-92A5CF8AE9B9@free.fr>
References: <CAMW1i2UB5s82AKksjTqU2svg2fx7bpAQcNXOEpB0naF-4orc7A@mail.gmail.com>
To: Ramon Fernandez <ramon@mongodb.com>

Hi Ramon,

Thanks for reaching this issue. For your information, I've already =
submitted a patch yesterday to alpine maintainers to fix the =
"cache_cursors" issue, and at least fix the starting problem of 3.6.4, =
but I agree with you it may be lucky case and offers no strong warranty =
for future release.

I will follow your advice, and propose a change of the APK to build =
against the wiredtiger tree provided by mongodb source.

I'm forwarding to alpine dev mailing list as well to let other alpine =
maintainers be aware of the situation,

Thanks again

Regards,
Marc

> Le 18 avr. 2018 =C3=A0 21:46, Ramon Fernandez <ramon@mongodb.com> a =
=C3=A9crit :
>=20
> Hi Filipp, Marc,
>=20
> my name is Ram=C3=B3n, and I work at MongoDB. Recently a user of the =
Alpine port of MongoDB run into a problem using the 3.6.4 version, and =
after inspecting the APKBUILD file we=E2=80=99ve seen that it uses the =
"--use-system-wiredtiger=E2=80=9D build option.
>=20
> Building MongoDB with a WiredTiger library other than the one included =
in the MongoDB source tree is not only unsupported, but extremely =
dangerous =E2=80=94 each patch version of MongoDB is tailored to a =
specific WiredTiger tree. Any other configuration is untested and can =
lead to undefined behavior, which for a database is a dangerous thing. =
We=E2=80=99ve discussed this publicly before with a RedHat maintainer.
>=20
> The issue we=E2=80=99ve seen is that MongoDB 3.6.4 introduces a new =
configuration options, =E2=80=9Ccache_cursors=E2=80=9D, which is not =
part of any existing WiredTiger release. This will cause the Alpine =
Linux port of MongoDB 3.6.4 to fail with an error at startup. This is =
the lucky case =E2=80=94 this version mismatch can lead to much worse =
outcomes.
>=20
> I=E2=80=99d strongly encourage you to address this issue promptly. =
I=E2=80=99ll be happy to open a bug report if necessary, but I figured =
I=E2=80=99d contact you first directly to see if you have any questions =
on the matter.
>=20
> Regards,
> Ram=C3=B3n.
>=20



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