Hi, I read the thread "Our CLUSTER implementation is pessimal" http://archives.postgresql.org/pgsql-hackers/2008-08/msg01371.php .
I would like to try/integrate that patch as we use CLUSTER a lot on our system. I was going to try to add the proper cost_index/cost_sort calls to decide which "path" should be executed, as in: http://archives.postgresql.org/pgsql-hackers/2008-09/msg00517.php I don't think it will be easy without help... I'll ask here a lot I'm afraid... About that patch: 1) would it be possible to use the tuplesort_*tupleslot set of functions instead of writing new ones for HeapTuple? That is: is it that difficult/impossible/nonsense to construct TupleTableSlot from HeapTuple and use those? 2) The patch doesn't check "HeapTupleSatisfiesVacuum" before passing it to tuplesort_putrawtuple: would it be reasonable to check the "isdead" flag before calling tuplesort_putrawtuple for each tuple? Sorry if I talked nonsense... Leonardo -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
