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From Jamie Stephens ...@morphism.com>
Subject Scanner.estimatedCount()?
Date Fri, 27 Jun 2014 13:42:00 GMT
Is there a way to get a quick estimate of the number of keys in a given
range?

Perhaps more generally, getting an estimate of the amount of work (and even
some sort of confidence based on, say, the age of something) to iterate
over a range.

I'd like to do some query planning, so statistics like these sure would be
nice.

--Jamie

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