_uid field doesn't support regexes

[nik9000]

I'm opening this discuss issue in response to a forum post.

It looks like you used to be able to run a regex query on _uid but you can't anymore. Do we want to allow it again?

[jpountz]

We plan on switching _uid to a more compact (binary) representation in the future, which will make the uid field incompatible with regexp, prefix or wildcard queries. So I don't think we should allow this again.

[bleskes]

So I don't think we should allow this again.

+1 . If people really need this they can also have an id field or use scripted queries (in combination with something else to reduce scope)

[nik9000]

Makes sense to me.