pgsql-server/src backend/access/hash/README ba ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)svr1(dot)postgresql(dot)org 03/09/04 19:06:27

Modified files:
src/backend/access/hash: README hash.c hashinsert.c hashovfl.c
hashpage.c hashscan.c hashsearch.c
hashutil.c
src/backend/storage/lmgr: lmgr.c
src/include/access: hash.h
src/include/storage: lmgr.h

Log message:
Reimplement hash index locking algorithms, per my recent proposal to
pghackers. This fixes the problem recently reported by Markus Krutner
(hash bucket split corrupts the state of scans being done concurrently),
and I believe it also fixes all the known problems with deadlocks in
hash index operations. Hash indexes are still not really ready for prime
time (since they aren't WAL-logged), but this is a step forward.