Re: PATCH: optimized DROP of multiple tables within a transaction
От | Shigeru Hanada |
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Тема | Re: PATCH: optimized DROP of multiple tables within a transaction |
Дата | |
Msg-id | CAEZqfEePJxv3heOmvNPZOJxhxpnQzKz5KfUDJgOFKSTtQ=U2tQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: PATCH: optimized DROP of multiple tables within a transaction (Tomas Vondra <tv@fuzzy.cz>) |
Ответы |
Re: PATCH: optimized DROP of multiple tables within a transaction
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Список | pgsql-hackers |
Hi Tomas, I reviewed v6 patch, and found that several places need fix. Sorry for extra nitpickings. * I found another extra space after asterisk. + RelFileNode * nodes; * Curly bracket which starts code block should be at the head of next line. + /* extend the array if needed (double the size) */ + if (maxrels <= nrels) { * There are several trailing tabs in src/backend/catalog/storage.c. * naming of DROP_RELATIONS_BSEARCH_LIMIT (or off-by-one bug?) IIUC bsearch is used when # of relations to be dropped is *more* than the value of DROP_RELATIONS_BSEARCH_LIMIT (10). IMO this behavior is not what the macro name implies; I thought that bsearch is used for 10 relations. Besides, the word "LIMIT" is used as *upper limit* in other macros. How about MIN_DROP_REL[ATION]S_BSEARCH or DROP_REL[ATION]S_LINEAR_SEARCH_LIMIT? # using RELS instead of RELATIONS would be better to shorten the name * +1 for Alvaro's suggestion about avoiding palloc traffic by starting with 8 elements or so. Regards, -- Shigeru HANADA
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