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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 06:51:08 -0700 |
| commit | acf49584e2165ded5396d107961b568fe8f5f954 (patch) | |
| tree | 0f72ba7113949808267a66120e1a87b6ef299531 /src/tutorial/funcs.c | |
| parent | e3914bd136e467b3af7e5a334e0e753df2a13f53 (diff) | |
| download | postgresql-acf49584e2165ded5396d107961b568fe8f5f954.tar.gz postgresql-acf49584e2165ded5396d107961b568fe8f5f954.zip | |
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/tutorial/funcs.c')
0 files changed, 0 insertions, 0 deletions