Github user ottobackwards commented on the issue:
https://github.com/apache/incubator-metron/pull/333
I think what we are seeing with the question here, the handling of null's
in the arithmetic functions and other recent work here is that it is confusing
and possibly inconsistent. Maybe it can explained better ( is there a Stellar
Language Guide to how parameters are handled? I don't think the doc we have is
enough ), or maybe it needs some more ... coordinated work as opposed to a
bunch of bugs getting fixed separately.
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