Github user twdsilva commented on the issue:
https://github.com/apache/phoenix/pull/401
It would be cleaner if we don't need the override props map. Currently
makePTableFromExisting calls init() and then build() using all the fields from
the passed in table *except* those that are overridden.
Would it work if we return a builder from the passed in PTable call the
setter to override whichever properties and always call init() and then build()
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