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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2021-02-23 17:30:21 -0300 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2021-02-23 17:30:21 -0300 |
| commit | bf518fefacc74a75d67a492ebee8d7a585989a34 (patch) | |
| tree | e77bcc44e89bfcf3664b25dd3d3869245f5ee4ac /src/backend/executor/nodeSort.c | |
| parent | b0645097962575eee3546d7a65420f7c78725cec (diff) | |
| download | postgresql-bf518fefacc74a75d67a492ebee8d7a585989a34.tar.gz postgresql-bf518fefacc74a75d67a492ebee8d7a585989a34.zip | |
Reinstate HEAP_XMAX_LOCK_ONLY|HEAP_KEYS_UPDATED as allowed
Commit 866e24d47db1 added an assert that HEAP_XMAX_LOCK_ONLY and
HEAP_KEYS_UPDATED cannot appear together, on the faulty assumption that
the latter necessarily referred to an update and not a tuple lock; but
that's wrong, because SELECT FOR UPDATE can use precisely that
combination, as evidenced by the amcheck test case added here.
Remove the Assert(), and also patch amcheck's verify_heapam.c to not
complain if the combination is found. Also, out of overabundance of
caution, update (across all branches) README.tuplock to be more explicit
about this.
Author: Julien Rouhaud <rjuju123@gmail.com>
Reviewed-by: Mahendra Singh Thalor <mahi6run@gmail.com>
Reviewed-by: Dilip Kumar <dilipbalaut@gmail.com>
Discussion: https://postgr.es/m/20210124061758.GA11756@nol
Diffstat (limited to 'src/backend/executor/nodeSort.c')
0 files changed, 0 insertions, 0 deletions