Github user alasdairhodge commented on the pull request:
https://github.com/apache/incubator-brooklyn/pull/870#issuecomment-136299460
Context: a relatively recent change meant that *all* config keys were
searched for any type that can be coerced to a `PortRange`, which was then
added to the set of "required open ports" by `SoftwareProcessImpl`. However,
since type coercions are defined from integer/long/string, this resulted in
spurious port values being added, and in at least one customer scenario, a
runtime exception when a value >16 bits was incorrectly subsumed into the port
set.
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