On Mon, Mar 12, 2012 at 1:16 PM, Timour Katchaounov wrote:

Hello Mark!

In summary, the feature is ready. It has been reviewed by Monty, and tested by Elena via the random query generator. All known bugs have been fixed. The implementation turned out to be a lot more tricky than initially expected. I hope the result is satisfactory. These are the main changes/highlights since our last email exchange:

Thank you.

- The implementation still allows the query engine to have what I call  "momentum". In various cases it is possible that the query engine  examines even an order of magnitude more rows than the give row limit.

This is OK for us. We won't be using it in those cases.

Given that we cannot push this feature into 5.3 (it is GA), an important question is whether I should continue maintaining the 5.3 version of the feature in addition to the released version in 5.5.

You don't need to maintain the 5.3 version. -- Mark Callaghan mdcallag@gmail.com