Github user radekg commented on the pull request:
https://github.com/apache/spark/pull/9608#issuecomment-168972745
@tnachen what would be the best place to publish such documentation?
Regarding `worth nothing` comment. The whole concept behind this pr is to allow
running spark master inside of a docker container on mesos and have the
executors run on the same mesos infrastructure, outside of the container in
which the master is running.
As such, this can only be achieved by knowing the ports on which the
particular services will run inside of the mesos task. It's not possible
otherwise as the ports have to be handed in to mesos at the time of the task
submission. This also means that the ports can be dedicated to spark and the
user is in full control of what ports will be available.
Does this clarify?
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