[support] User ID in users table

[Jamie Holly]

Here's the only issue I could find:

http://drupal.org/node/356074

 From a quick reading apparently the decision was made from the old 
problem of User 0 (Anonymous) not being inserted at times.

Jamie Holly
http://www.intoxination.net
http://www.hollyit.net

On 11/30/2012 8:42 AM, Earnie Boyd wrote:
> On Fri, Nov 30, 2012 at 8:32 AM, Jamie Holly wrote:
> > This isn't the case in D7.  UID is assigned by a SELECT MAX(uid) FROM
> > {users}. Check user.module line 571.
>
> Unless the whole users table is locked then this is guaranteed to fail
> under heavy use.  Some poor user is going to get a DB error of
> duplicate key.  The chances may be small but there is a chance it will
> happen.  Do you know the issue # that caused this to happen?
>