Re: Index functions and INDEX_CREATE_SKIP_BUILD

On Tue, Dec 02, 2025 at 08:18:48AM +0100, Antonin Houska wrote:
> In ReindexRelationConcurrently(), the call of index_concurrently_create_copy()
> is enclosed in
>
>     /*
>      * Switch to the table owner's userid, so that any index functions are
>      * run as that user.  Also lock down security-restricted operations
>      * and arrange to make GUC variable changes local to this command.
>      */
>     GetUserIdAndSecContext(&save_userid, &save_sec_context);
>     SetUserIdAndSecContext(heapRel->rd_rel->relowner,
>                            save_sec_context | SECURITY_RESTRICTED_OPERATION);
>     save_nestlevel = NewGUCNestLevel();
>
> and
>
>     /* Roll back any GUC changes executed by index functions */
>     AtEOXact_GUC(false, save_nestlevel);
>
>     /* Restore userid and security context */
>     SetUserIdAndSecContext(save_userid, save_sec_context);

Yes.

> Which index functions can be called if index_create() receives the
> INDEX_CREATE_SKIP_BUILD flag?

What do you mean here?  Are you seeing an issue with that, or are you
asking about a concept that would be introduced by a different patch?
--
Michael