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From "Robert Newson (JIRA)" <>
Subject [jira] Commented: (COUCHDB-796) Bignum support
Date Sat, 12 Jun 2010 18:24:14 GMT


Robert Newson commented on COUCHDB-796:

Sorry, I pasted a terse summary from #couchdb and was then too busy to flesh this out.

I'm actually not sure I like the idea of tweaking mochijson2.erl, though it was suggested
(by you iirc ;). Also the notion that numbers magically become strings at some point feels
wrong, but so also does the notion that a sum() overflows or goes wrong when you hit that
limit too.

Rather, I think a guarantee that some bignum.js library is always available and some prominent
docs about it. Ideally a BigDecimal and BigInteger class like Java has (yes, kill me).

> Bignum support
> --------------
>                 Key: COUCHDB-796
>                 URL:
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Database Core
>    Affects Versions: 0.11
>            Reporter: Robert Newson
>             Fix For: 1.0
> CouchDB uses spidermonkey which can only handle 32 bit integer values before overflowing.
This might surprise users of map/reduce on large datasets.
> Instead, alter mochijson2.erl to handle bignums and encode numeric values as strings.

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