Hi On Fri, Aug 20, 2010 at 10:14 AM, Brian Aker <[email protected]> wrote: > Hi! > > On Aug 19, 2010, at 7:17 PM, Prafulla wrote: > >> I would like to understand if any work is done on this project so >> far. From mailing list it seems Stewart has done some work. > > I believe both Stewart and I have poked at it. There are two needs: > > 1) An engine that can go behind the current "heap" engine that is > documented/extendable/etc. There is a long laundry list for this. > > 2) A concurrent, transactional engine.
How much of work is done in this regard ? Any pointer to the bzr branch ? I would like to take a look. Also I would like to contribute to its development further. Is there any design document/list of requirement for the engine that someone has prepared? If yes, could you please give pointer to that as well ? >> Also I just saw BTree index support has been removed from memory engine. >> Is it because we are going to redesign the engine itself or there >> is no much demand for Btree? It looks like there is need for Btree index >> on memory engine in real-life scenarios. At lease people seem to be using >> it. > > A couple of days ago when I was going over the btree I observed that if I ran > all of the tests through it that a number of crashes/bugs/etc showed up (and > I did the same with MySQL and found additional issues). The problem is that > the b-tree support is just not heavily tested. It should be a drop in > replacement for the hash indexes, but it is not. The hash code is pretty > reliable though. I don't really like having code in the tree that we know has > issues. I would agree that the range indexes are useful, but in their current > state I don't believe that they are that usable. > > Does this help any? > Yes, I understand your point of not having code in the main tree that has problems. But I do think, that range indexes should be added later back to memory engine once we revamp it and fully test it. -- Best Regards, Prafulla V Tekawade _______________________________________________ Mailing list: https://launchpad.net/~drizzle-discuss Post to : [email protected] Unsubscribe : https://launchpad.net/~drizzle-discuss More help : https://help.launchpad.net/ListHelp
