Github user markap14 commented on the issue:
https://github.com/apache/nifi/pull/1682
@joewitt I've pushed another commit that I think addresses your concerns
above. Re: the GrokReader, if you are using a "SELECT * FROM FLOWFILE..." type
of query then I agree it is a bit odd. However, you could be using QueryRecord
to do something like "SELECT timestamp, message WHERE ..." and in this case the
extra Allowable Value means you don't have to define another schema that does
include each of the fields.
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