Github user JamesRTaylor commented on the pull request: https://github.com/apache/phoenix/pull/153#issuecomment-209173008 There are likely lots of issues if isNamespaceMapping config property changes from true to false, no? Seems like it's meant to enable/disable the feature. Wouldn't existing namespace mapped tables not be found if it was changed from true to false after tables had been created? What would be the purpose of allowing a schema (namespace) to be created if the feature is off? If none, then it's probably best to give an error message if isNamespaceMapping is off and CREATE SCHEMA is used.
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