Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/5722#issuecomment-137258443
> If you mean, let N vary per port, yes, that seems to me exactly what a
range is.
Correct, but my original question was the same as yours: is there a use
case for that?
My view is that no, there isn't. Let's take two ports, "webui" and "akka",
and assign different ranges to them. There's only a 10 port range for "webui",
and a 1000 port range for "akka". In practice, though, it's as if both ranges
were 10, since as soon as you start the 11th application, the webui can't bind
and Spark will exit.
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