pgsql/src backend/access/heap/tuptoaster.c bac ...

CVSROOT: /cvsroot
Module name: pgsql
Changes by: tgl@postgresql.org 02/01/16 15:29:02

Modified files:
src/backend/access/heap: tuptoaster.c
src/backend/utils/time: tqual.c
src/include/utils: tqual.h

Log message:
TOAST needs to do at least minimal time-qual checking in order not to
mess up after an aborted VACUUM FULL, per today's pghackers discussion.
Add a suitable HeapTupleSatisfiesToast routine. Remove useless special-
case test in HeapTupleSatisfiesVisibility macro for xmax =
BootstrapTransactionId; perhaps that was needed at one time, but it's
a waste of cycles now, not to mention actively wrong for SnapshotAny.
Along the way, add some much-needed comments to tqual.c, and simplify
toast_fetch_datum, which no longer needs to assume it may see chunks
out-of-order.