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 <[email protected]> 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
