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Register built-in dynamic managers in EXEC_BACKEND child (PSP18) #602

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Register built-in dynamic managers in EXEC_BACKEND child (PSP18) #602

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9 changes: 9 additions & 0 deletions src/backend/postmaster/launch_backend.c
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Original file line number Diff line number Diff line change
Expand Up @@ -695,6 +695,15 @@ SubPostmasterMain(int argc, char *argv[])
*/
LocalProcessControlFile(false);

/*
* Re-register built-in dynamic managers (e.g. md smgr). On fork-based
* platforms the child inherits the postmaster's already-populated smgr
* table; under EXEC_BACKEND the child starts with an empty table, so we
* must re-run registration. Must happen before shared_preload_libraries
* so extensions can still register their own smgrs from _PG_init().
*/
register_builtin_dynamic_managers();

/*
* Reload any libraries that were preloaded by the postmaster. Since we
* exec'd this process, those libraries didn't come along with us; but we
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