Github user jacques-n commented on the pull request:
https://github.com/apache/drill/pull/474#issuecomment-209081311
In general, I'm against version number checking. We did that in the code
early on but we should be moving towards a capabilities flag approach.
Also agree with Paul in his mention of DRILL-4286, don't think worrying
about rolling upgrade makes sense until we resolve the issues around
decommissioning.
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