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| author | Robert Haas <rhaas@postgresql.org> | 2022-03-24 14:32:24 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2022-03-24 14:32:48 -0400 |
| commit | bbace5697df12398e87ffd9879171c39d27f5b33 (patch) | |
| tree | 7d076a8cda05aa7c4c1c6eb2b505e2fa279f6679 /contrib/pageinspect/gistfuncs.c | |
| parent | 81045e1e1c3370fb7e57c8841b0a7b6aab31831b (diff) | |
| download | postgresql-bbace5697df12398e87ffd9879171c39d27f5b33.tar.gz postgresql-bbace5697df12398e87ffd9879171c39d27f5b33.zip | |
Fix possible recovery trouble if TRUNCATE overlaps a checkpoint.
If TRUNCATE causes some buffers to be invalidated and thus the
checkpoint does not flush them, TRUNCATE must also ensure that the
corresponding files are truncated on disk. Otherwise, a replay
from the checkpoint might find that the buffers exist but have
the wrong contents, which may cause replay to fail.
Report by Teja Mupparti. Patch by Kyotaro Horiguchi, per a design
suggestion from Heikki Linnakangas, with some changes to the
comments by me. Review of this and a prior patch that approached
the issue differently by Heikki Linnakangas, Andres Freund, Álvaro
Herrera, Masahiko Sawada, and Tom Lane.
Discussion: http://postgr.es/m/BYAPR06MB6373BF50B469CA393C614257ABF00@BYAPR06MB6373.namprd06.prod.outlook.com
Diffstat (limited to 'contrib/pageinspect/gistfuncs.c')
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