A cautionary tale - mgo asserts

[John Meinel]

>
> ...
>


>
>   ops := []txn.Op{{
>       C: "collection",
>       Id: ...,
>       Assert: bson.M{
>           "some-field.A": "foo",
>           "some-field.B": 99,
>       },
>       Update: ...
>   }
>
> ...
>
>

> [1] If transaction operations are loaded and used from the DB (more likely
> under load when multiple runners are acting concurrently), the Insert,
> Update and Assert fields are loaded as bson.M (this is what the bson
> Unmarshaller does for interface{} typed fields). Once this happens field
> ordering is lost.
>
> If loading into a bson.M is the problem, wouldn't using a bson.M to start
with also be a problem?

John
=:->
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