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postgres_fdw: Add support for parallel commit.

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postgres_fdw commits remote (sub)transactions opened on remote server(s)
in a local (sub)transaction one by one when the local (sub)transaction
commits.  This patch allows it to commit the remote (sub)transactions in
parallel to improve performance.  This is enabled by the server option
"parallel_commit".  The default is false.

Etsuro Fujita, reviewed by Fujii Masao and David Zhang.

Discussion: http://postgr.es/m/CAPmGK17dAZCXvwnfpr1eTfknTGdt%3DhYTV9405Gt5SqPOX8K84w%40mail.gmail.com
This commit is contained in:
Etsuro Fujita
2022-02-24 14:30:00 +09:00
parent cfb4e209ec
commit 04e706d423
5 changed files with 376 additions and 19 deletions
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2
contrib/postgres_fdw/option.c
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@ -121,6 +121,7 @@ postgres_fdw_validator(PG_FUNCTION_ARGS)
strcmp(def->defname, "updatable") == 0 ||
strcmp(def->defname, "truncatable") == 0 ||
strcmp(def->defname, "async_capable") == 0 ||
strcmp(def->defname, "parallel_commit") == 0 ||
strcmp(def->defname, "keep_connections") == 0)
{
/* these accept only boolean values */
@ -249,6 +250,7 @@ InitPgFdwOptions(void)
/* async_capable is available on both server and table */
{"async_capable", ForeignServerRelationId, false},
{"async_capable", ForeignTableRelationId, false},
{"parallel_commit", ForeignServerRelationId, false},
{"keep_connections", ForeignServerRelationId, false},
{"password_required", UserMappingRelationId, false},