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postgres_fdw: Add support for parallel abort.

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

Etsuro Fujita, reviewed by David Zhang.

Discussion: http://postgr.es/m/CAPmGK15FuPVGx3TGHKShsbPKKtF1y58-ZLcKoxfN-nqLj1dZ%3Dg%40mail.gmail.com
This commit is contained in:
Etsuro Fujita
2023-04-06 17:30:00 +09:00
parent b9b125b9c1
commit 983ec23007
5 changed files with 489 additions and 43 deletions
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2
contrib/postgres_fdw/option.c
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@ -125,6 +125,7 @@ postgres_fdw_validator(PG_FUNCTION_ARGS)
strcmp(def->defname, "truncatable") == 0 ||
strcmp(def->defname, "async_capable") == 0 ||
strcmp(def->defname, "parallel_commit") == 0 ||
strcmp(def->defname, "parallel_abort") == 0 ||
strcmp(def->defname, "keep_connections") == 0)
{
/* these accept only boolean values */
@ -271,6 +272,7 @@ InitPgFdwOptions(void)
{"async_capable", ForeignServerRelationId, false},
{"async_capable", ForeignTableRelationId, false},
{"parallel_commit", ForeignServerRelationId, false},
{"parallel_abort", ForeignServerRelationId, false},
{"keep_connections", ForeignServerRelationId, false},
{"password_required", UserMappingRelationId, false},