Jay Buffington created MESOS-1659:
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Summary: docker containerizer should not require executor be part
of image
Key: MESOS-1659
URL: https://issues.apache.org/jira/browse/MESOS-1659
Project: Mesos
Issue Type: Improvement
Reporter: Jay Buffington
I would like the ability to run an executor inside of an off-the-shelf docker
container.
We already have a process for getting an executor into the sandbox. I've
spoken with [~tnachen] about this and we agreed that the containerize should
bind mount (via the docker volumes feature) the sandbox into the container and
run the executor.
The problem with this is the majority of executors have a dependency on
libmesos and libmesos usually doesn't exist in off the shelf containers.
I propose the docker containerize also bind mount libmesos and it's
dependencies (like libunwind) into the container and use LD_LIBRARY_PATH so the
executor can find them.
You could make an argument that executors should be statically compiled self
contained binaries, but that is difficult with executors written in python or
java. We can use pex or jar to package up language dependencies, but native
deps like libmesos are tricky. Having the docker containerize guarantee that
libmesos is there really simplifies things.
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