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From Neil Conway <neil.con...@gmail.com>
Subject Re: [VOTE] Release Apache Mesos 0.27.2 (rc1)
Date Mon, 29 Feb 2016 21:39:24 GMT
As described (briefly) in the release emails, 0.27.2, 0.26.1, 0.25.1,
and 0.24.2 contains a new feature: "reliable floating point for scalar
resources" (MESOS-4687).

To elaborate on that slightly, Mesos now only supports scalar resource
values with three decimal digits of precision (e.g., reserving "5.001
CPUs" for a task). As a result of this change, frameworks that do
their own resource math may see slightly different results;
furthermore, if any frameworks were trying to manage extremely
fine-grained resource values (> 3 decimal digits of precision), that
will no longer be supported.

For more information, please see:

https://mail-archives.apache.org/mod_mbox/mesos-user/201602.mbox/%3CCAOW5sYZJn5caBOwZyPV008JgL1F2FYFxL_bM5CtYA2PF2OG7Bw%40mail.gmail.com%3E
https://docs.google.com/document/d/14qLxjZsfIpfynbx0USLJR0GELSq8hdZJUWw6kaY_DXc/edit?usp=sharing
https://issues.apache.org/jira/browse/MESOS-4687

Neil


On Fri, Feb 26, 2016 at 8:54 PM, Michael Park <mcypark@gmail.com> wrote:
> Hi all,
>
> Please vote on releasing the following candidate as Apache Mesos 0.27.2.
>
>
> 0.27.2 includes the following:
> --------------------------------------------------------------------------------
>
> MESOS-4693 - Variable shadowing in HookManager::slavePreLaunchDockerHook.
> MESOS-4711 - Race condition in libevent poll implementation causes crash.
> MESOS-4754 - The "executors" field is exposed under a backwards incompatible
> schema.
> MESOS-4687 - Implement reliable floating point for scalar resources.
>
>
> The CHANGELOG for the release is available at:
> https://git-wip-us.apache.org/repos/asf?p=mesos.git;a=blob_plain;f=CHANGELOG;hb=0.27.2-rc1
> --------------------------------------------------------------------------------
>
> The candidate for Mesos 0.27.2 release is available at:
> https://dist.apache.org/repos/dist/dev/mesos/0.27.2-rc1/mesos-0.27.2.tar.gz
>
> The tag to be voted on is 0.27.2-rc1:
> https://git-wip-us.apache.org/repos/asf?p=mesos.git;a=commit;h=0.27.2-rc1
>
> The MD5 checksum of the tarball can be found at:
> https://dist.apache.org/repos/dist/dev/mesos/0.27.2-rc1/mesos-0.27.2.tar.gz.md5
>
> The signature of the tarball can be found at:
> https://dist.apache.org/repos/dist/dev/mesos/0.27.2-rc1/mesos-0.27.2.tar.gz.asc
>
> The PGP key used to sign the release is here:
> https://dist.apache.org/repos/dist/release/mesos/KEYS
>
> The JAR is up in Maven in a staging repository here:
> https://repository.apache.org/content/repositories/orgapachemesos-1104
>
> Please vote on releasing this package as Apache Mesos 0.27.2!
>
> The vote is open until Wed Mar 2 23:59:59 PST 2016 and passes if a majority
> of at least 3 +1 PMC votes are cast.
>
> [ ] +1 Release this package as Apache Mesos 0.27.2
> [ ] -1 Do not release this package because ...
>
> Thanks,
>
> MPark, Joris, Kapil

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