Document implications of negative observations #658
Merged
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Fixes #638.
It's of course weird to talk abou negative values of an
"amount". However, for the Gauge, which quite regularly will receive
negative increments, the word "amount" is used, too, so I didn't want
to change it everywhere to "value" or something.
AFAIK the only place where negative values are rejected is indeed the
Counter.
Signed-off-by: beorn7 beorn@grafana.com