Return-Path: owner-postman Received: from localhost.Berkeley.EDU (localhost.Berkeley.EDU [127.0.0.1]) by nobozo.CS.Berkeley.EDU (8.6.10/8.6.3) with SMTP id PAA19812 for postgres-redist; Tue, 5 Mar 1996 15:46:32 -0800 Resent-From: POSTGRES mailing list Resent-Message-Id: <199603052346.PAA19812@nobozo.CS.Berkeley.EDU> Sender: owner-postman@postgres.Berkeley.EDU X-Return-Path: owner-postman Received: from faerie.CS.Berkeley.EDU (faerie.CS.Berkeley.EDU [128.32.37.53]) by nobozo.CS.Berkeley.EDU (8.6.10/8.6.3) with ESMTP id PAA23156 for ; Tue, 5 Mar 1996 15:46:31 -0800 Received: from localhost.Berkeley.EDU (localhost.Berkeley.EDU [127.0.0.1]) by faerie.CS.Berkeley.EDU (8.6.10/8.6.3) with SMTP id PAA01847; Tue, 5 Mar 1996 15:46:19 -0800 Message-Id: <199603052346.PAA01847@faerie.CS.Berkeley.EDU> X-Authentication-Warning: faerie.CS.Berkeley.EDU: Host localhost.Berkeley.EDU didn't use HELO protocol From: aoki@cs.berkeley.edu (Paul M. Aoki) To: "V.Grabner" Cc: avi@baan.nl, postgres@postgres.Berkeley.EDU Subject: Re: hash indices Reply-To: aoki@cs.berkeley.edu (Paul M. Aoki) In-reply-to: Your message of Tue, 05 Mar 1996 22:06:36 +0100 <199603052106.WAA09702@zen.gams.co.at> Date: Tue, 05 Mar 96 15:46:19 -0800 X-Sender: aoki@postgres.Berkeley.EDU Resent-To: postgres-redist@postgres.Berkeley.EDU X-Mts: smtp Resent-Date: Tue, 05 Mar 96 15:46:31 -0800 Resent-XMts: smtp "V.Grabner" writes: > We had the same problem when using hash indices. Hash indices > alsways crashed the database when creating an index or inserting > > 50 rows into the table. > > Do not use them, use btree indices instead. > > I tried to trace the problem but I did not find it. I found > out it always happend during the split of an hash page but I > never found out why. Without documentation I was lost. the hash index split code is really, really broken in 4.2. it doesn't surface until you hit some fill factor (i.e., get a bunch of page collisions), but after that the hash index is corrupt. i think the fixes (bug fixes, taking out the bogus "high concurrency" locking, rewriting the split code) made it into some release of pg95 or another.. -- Paul M. Aoki | University of California at Berkeley aoki@CS.Berkeley.EDU | Dept. of EECS, Computer Science Division (#1776) | Berkeley, CA 94720-1776 ============================================================================== To add/remove yourself to/from the POSTGRES mailing list: send mail with the subject line ADD or DEL to "postgres-request@postgres.Berkeley.EDU". If this fails, send mail to "post_questions@postgres.Berkeley.EDU" and a human will deal with it. DO NOT post to the "postgres" mailing list. ============================================================================== URL: http://s2k-ftp.CS.Berkeley.EDU:8000/postgres/