Your patch has been added to the PostgreSQL unapplied patches list at: http://momjian.postgresql.org/cgi-bin/pgpatches
I will try to apply it within the next 48 hours. --------------------------------------------------------------------------- Neil Conway wrote: > Attached is a patch that implements unique hash indexes. Regression > tests and docs have been updated (with the exception of > src/backend/access/hash/README). > > This patches implements an improved version of the concurrency changes I > outlined on -hackers a couple days ago: the separate lock for > "right-of-insertion" into a bucket chain has been replaced by making use > of existing lmgr lockmodes to get the behavior we need. > > I also took the opportunity to refactor the hash index code in a couple > places by moving duplicated code into separate functions, fixed some > typos in the README file, etc. > > I've tested this a little bit (it survives 100,000 single-user pgbench > transactions, and 10 concurrent clients doing 1000 transactions each), > but I need to do more testing in the future. > > As far as I know, the unique hash index code is functionally complete, > but don't add this to the patch queue (it is obviously for 7.5, anyway), > since I'm about to get started on some related hash index work, for > which I'll submit a mega-patch containing everything. I just posted this > here so that anyone who's interested can take a look at it -- comments > are welcome. > > Thanks to Tom Lane, who was very helpful when I asked him code > questions, including suggesting the improved concurrency design I > mentioned above. > > Cheers, > > Neil > [ Attachment, skipping... ] > > ---------------------------(end of broadcast)--------------------------- > TIP 9: the planner will ignore your desire to choose an index scan if your > joining column's datatypes do not match -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster