Improve comment for tricky aspect of index-only scans. Index-only scans avoid taking a lock on the VM buffer, which would cause a lot of contention. To be correct, that requires some intricate assumptions that weren't completely documented in the previous comment.
Reviewed by Robert Haas. Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/35c0cd3b05b0be18dc2d049c33b38a2d13993ffe Modified Files -------------- src/backend/executor/nodeIndexonlyscan.c | 34 ++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 9 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
