Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/4216#issuecomment-71921055
Hi @andrewor14,
> Although this patch adds many lines, its scope is actually limited only
to standalone cluster mode, and the default submit behavior is actually
unchanged.
While I understand this, and I also think a stable protocol is a good
thing, my main concern is that the bug is marked as a release blocker. Even if
this is isolated, it's meant to expose a new public API, so it means that is
incurs maintenance for every future release, not just 1.3. So it feels a little
rushed to try to get this in at this point, when people for sure will have a
lot of feedback.
If feels, from the spec, that making sure the akka-level compatility is not
broken in 1.3 would cover a lot of ground already.
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