Hello Mesos fans, I just wanted to alert you to a potentially disastrous incompatibility introduced in the last few OpenJDK packages released for the popular "openjdk-r" Ubuntu PPA.
Per Debian bug 815475: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815475 The OpenJDK packaging changed the virtual packages it provides. Notably, it no longer provides "java-runtime-headless", which Mesos depends on: http://bazaar.launchpad.net/%7Eopenjdk/openjdk/openjdk8/revision/672/debian/control This means that if you use the Mesosphere .deb packaging and the OpenJDK Ubuntu / Debian repos, when you upgrade from < 8u77 to >= 8u77, the Mesos package may be uninstalled. If you happen to run Puppet, it calls apt with the "-f" force option by default, which will do all this without even telling you... I believe I have a fix here: https://github.com/mesosphere/mesos-deb-packaging/pull/77 I would love critical review -- this surprised us and crippled our production clusters, and I got this out in a panic, so I am not 100% sure it is the right fix... hopefully this note saves someone else a really really bad day. Wishing package management a slow and painful death, Steven (PS... maybe this is good evidence that the Mesos project needs more support around understanding packaging and distribution management)
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