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| author | Noah Misch <noah@leadboat.com> | 2024-10-25 06:51:03 -0700 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2024-10-25 06:51:06 -0700 |
| commit | bfd5c6e279c8e1702eea882439dc7ebdf4d4b3a5 (patch) | |
| tree | 418896f4d63f386f8c4353207dff643913c663dc /src/backend/executor/execTuples.c | |
| parent | 95c5acb3fc261067ab65ddc0b2dca8e162f09442 (diff) | |
WAL-log inplace update before revealing it to other sessions.
A buffer lock won't stop a reader having already checked tuple
visibility. If a vac_update_datfrozenid() and then a crash happened
during inplace update of a relfrozenxid value, datfrozenxid could
overtake relfrozenxid. That could lead to "could not access status of
transaction" errors. Back-patch to v12 (all supported versions). In
v14 and earlier, this also back-patches the assertion removal from
commit 7fcf2faf9c7dd473208fd6d5565f88d7f733782b.
Discussion: https://postgr.es/m/20240620012908.92.nmisch@google.com
Diffstat (limited to 'src/backend/executor/execTuples.c')
0 files changed, 0 insertions, 0 deletions