Github user bbende commented on the issue: https://github.com/apache/nifi/pull/869 @patricker thanks for the contribution! Definitely makes sense to support both formats... What do you think about using a regex to determine if it is a long, and if so then parseLong, otherwise attempt to parse a date? (could be the other way around, but I was thinking the regex for a long is easiest) I'm thinking of the case where someone is always sending in longs and it is continuously throwing/catching the parse exception, that may end up being expensive.
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