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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2024-12-10 17:17:28 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2024-12-10 17:17:28 -0500 |
| commit | 982890530379235974a7e99fd72e862ae40f1400 (patch) | |
| tree | c94677fa488822e069c88ba83e1f34d596a40eaa /contrib/postgres_fdw/postgres_fdw.h | |
| parent | 8b9cbf4922756d912309567f83f81e41f1737ac7 (diff) | |
| download | postgresql-982890530379235974a7e99fd72e862ae40f1400.tar.gz postgresql-982890530379235974a7e99fd72e862ae40f1400.zip | |
Doc: add some commentary about ExecutorRun's NoMovement special case.
Robert Haas expressed concern about whether commit 3eea7a0c9 exposed
the parallel-execution machinery to a case it isn't tested for, namely
a second non-parallel execution of a plan after a parallel execution.
Investigation shows that that can't happen because of pquery.c's
manipulation of the scan direction, but it sure wasn't obvious to
start with. Add some commentary about that.
Discussion: https://postgr.es/m/CA+TgmoagyKQy=HFw+wLo0AKTYWHui+iKswZ8Jnqqd-cFby-WVg@mail.gmail.com
Diffstat (limited to 'contrib/postgres_fdw/postgres_fdw.h')
0 files changed, 0 insertions, 0 deletions