diff options
| author | Noah Misch <noah@leadboat.com> | 2025-01-25 11:28:14 -0800 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2025-01-25 11:28:14 -0800 |
| commit | d28cd3e7b21c41a710fd9c188a57dad99f28805f (patch) | |
| tree | b4fb169ea6db1742fc13d5cc0cc2fcab54bcab3d /src/backend/executor/execParallel.c | |
| parent | 81772a495ec98d36eabf5cc294e7031a9545c5c1 (diff) | |
| download | postgresql-d28cd3e7b21c41a710fd9c188a57dad99f28805f.tar.gz postgresql-d28cd3e7b21c41a710fd9c188a57dad99f28805f.zip | |
At update of non-LP_NORMAL TID, fail instead of corrupting page header.
The right mix of DDL and VACUUM could corrupt a catalog page header such
that PageIsVerified() durably fails, requiring a restore from backup.
This affects only catalogs that both have a syscache and have DDL code
that uses syscache tuples to construct updates. One of the test
permutations shows a variant not yet fixed.
This makes !TransactionIdIsValid(TM_FailureData.xmax) possible with
TM_Deleted. I think core and PGXN are indifferent to that.
Per bug #17821 from Alexander Lakhin. Back-patch to v13 (all supported
versions). The test case is v17+, since it uses INJECTION_POINT.
Discussion: https://postgr.es/m/17821-dd8c334263399284@postgresql.org
Diffstat (limited to 'src/backend/executor/execParallel.c')
0 files changed, 0 insertions, 0 deletions