Log Message:
-----------
Fix logic in lazy vacuum to decide if it's worth trying to truncate the heap.
If the table was smaller than REL_TRUNCATE_FRACTION (= 16) pages, we always
tried to acquire AccessExclusiveLock on it even if there was no empty pages
at the end.
Report by Simon Riggs. Back-patch all the way to 7.4.
Tags:
----
REL7_4_STABLE
Modified Files:
--------------
pgsql/src/backend/commands:
vacuumlazy.c (r1.32.2.2 -> r1.32.2.3)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/vacuumlazy.c?r1=1.32.2.2&r2=1.32.2.3)
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