Allow special SKIP LOCKED condition in Assert() Under concurrency, it is possible for two sessions to be merrily locking and releasing a tuple and marking it again as HEAP_XMAX_INVALID all the while a third session attempts to lock it, miserably fails at it, and then contemplates life, the universe and everything only to eventually fail an assertion that said bit is not set. Before SKIP LOCKED that was indeed a reasonable expectation, but alas! commit df630b0dd5ea falsified it.
This bug is as old as time itself, and even older, if you think time begins with the oldest supported branch. Therefore, backpatch to all supported branches. Author: Simon Riggs <[email protected]> Discussion: https://postgr.es/m/CANbhV-FeEwMnN8yuMyss7if1ZKjOKfjcgqB26n8pqu1e=q0...@mail.gmail.com Branch ------ REL_11_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/28cd57416eb7cb6642eb23bd8acbf2f41ce76844 Modified Files -------------- src/backend/access/heap/heapam.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
