On Sun, Oct 22, 2023 at 02:02:45PM -0700, Noah Misch wrote:
> -     /* OK, do it */
> -     brinsummarize(indexRel, heapRel, heapBlk, true, &numSummarized, NULL);
> +     /* see gin_clean_pending_list() */
> +     if (indexRel->rd_index->indisvalid)
> +             brinsummarize(indexRel, heapRel, heapBlk, true, &numSummarized, 
> NULL);
> +     else
> +             ereport(DEBUG1,
> +                             
> (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
> +                              errmsg("index \"%s\" is not valid",
> +                                             
> RelationGetRelationName(indexRel))));

brinsummarize() could return 0 even for a valid index, and we would
not be able to make the difference with an invalid index.  Perhaps you
are right and this is not a big deal in practice to do as you are
suggesting.
--
Michael

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