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Etsuro Fujita e5a3c9d9b5 postgres_fdw: Inherit the local transaction's access/deferrable modes. ... Previously, postgres_fdw always 1) opened a remote transaction in READ WRITE mode even when the local transaction was READ ONLY, causing a READ ONLY transaction using it that references a foreign table mapped to a remote view executing a volatile function to write in the remote side, and 2) opened the remote transaction in NOT DEFERRABLE mode even when the local transaction was DEFERRABLE, causing a SERIALIZABLE READ ONLY DEFERRABLE transaction using it to abort due to a serialization failure in the remote side. To avoid these, modify postgres_fdw to open a remote transaction in the same access/deferrable modes as the local transaction. This commit also modifies it to open a remote subtransaction in the same access mode as the local subtransaction. Although these issues exist since the introduction of postgres_fdw, there have been no reports from the field. So it seems fine to just fix them in master only. Author: Etsuro Fujita <etsuro.fujita@gmail.com> Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/CAPmGK16n_hcUUWuOdmeUS%2Bw4Q6dZvTEDHb%3DOP%3D5JBzo-M3QmpQ%40mail.gmail.com		4 weeks ago
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src	postgres_fdw: Inherit the local transaction's access/deferrable modes.	4 weeks ago
KNOWN_BUGS	…
MISSING_FEATURES	…
Makefile	Remove distprep	2 years ago
TODO	…