Hi,
> Actually, no extension is needed: table_beginscan_common() already
> accepts user_flags, so heapam_index_build_range_scan() can simply
> call it directly and pass SO_MAINTENANCE.
>
> BRIN's summarize_range() also goes through
> heapam_index_build_range_scan(), so fixing the serial path would
> switch it over. IMO, that counts as maintenance too.
Thanks for the review. Attached is v3, which also handles serial index
builds by calling table_beginscan_common() directly, as you suggested.
This covers BRIN range summarization too, without changing the API.
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Regards,
Jingtang Zhang
