{"id":104434,"date":"2022-06-17T09:37:01","date_gmt":"2022-06-17T07:37:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-postgresql-14-4-s-ispravleniem-povrezhdeniya-indeksov"},"modified":"2022-06-17T09:37:01","modified_gmt":"2022-06-17T07:37:01","slug":"obnovlenie-postgresql-14-4-s-ispravleniem-povrezhdeniya-indeksov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-postgresql-14-4-s-ispravleniem-povrezhdeniya-indeksov","title":{"rendered":"A PostgreSQL 14.4 friss\u00edt\u00e9se a hib\u00e1s indexek jav\u00edt\u00e1s\u00e1val.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A helyre\u00e1ll\u00edt\u00f3 kiad\u00e1s k\u00e9sz\u00fclt el a PostgreSQL 14.4 adatb\u00e1zis-kezel\u0151 rendszerben, amelyben fontos probl\u00e9m\u00e1t orvosoltak, amely bizonyos k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt \u00e9szrev\u00e9tlen adatk\u00e1rosod\u00e1st okozhatott az indexekben a «CREATE INDEX CONCURRENTLY» \u00e9s a «REINDEX CONCURRENTLY» utas\u00edt\u00e1sok v\u00e9grehajt\u00e1sa sor\u00e1n. Az eml\u00edtett utas\u00edt\u00e1sokkal l\u00e9trehozott indexek n\u00e9mely bejegyz\u00e9st figyelmen k\u00edv\u00fcl hagyhatnak, ami azt eredm\u00e9nyezi, hogy a probl\u00e9m\u00e1s indexek bevon\u00e1s\u00e1val v\u00e9gzett SELECT lek\u00e9rdez\u00e9sek sor\u00e1n egyes sorok kimaradnak. <\/p>\n

Az B-f\u00e1s indexek k\u00e1rosod\u00e1s\u00e1nak meg\u00e1llap\u00edt\u00e1s\u00e1hoz haszn\u00e1lhat\u00f3 a «pg_amcheck —heapallindexed adatb\u00e1zis_n\u00e9v» parancs. Ha hib\u00e1t \u00e9szlelnek, vagy a m\u00faltbeli kiad\u00e1sokban a «CREATE INDEX CONCURRENTLY» \u00e9s a «REINDEX CONCURRENTLY» utas\u00edt\u00e1sokat m\u00e1s t\u00edpus\u00fa indexekkel (mint GiST, GIN stb.) alkalmazt\u00e1k, akkor a 14.4 verzi\u00f3ra val\u00f3 friss\u00edt\u00e9st k\u00f6vet\u0151en aj\u00e1nlott \u00fajraindex\u00e1lni a «reindexdb —all» seg\u00e9dprogrammal vagy a «REINDEX CONCURRENTLY index_n\u00e9v» parancs seg\u00edts\u00e9g\u00e9vel. <\/p>\n

A probl\u00e9ma csak a 14.x \u00e1gat \u00e9rinti, amelybe olyan optimaliz\u00e1ci\u00f3k ker\u00fcltek be, amelyek bizonyos tranzakci\u00f3kat kiz\u00e1rnak a VACUUM m\u0171velet v\u00e9grehajt\u00e1sa sor\u00e1n, amelyek a «CREATE INDEX CONCURRENTLY» \u00e9s a «REINDEX CONCURRENTLY» v\u00e9grehajt\u00e1s\u00e1hoz kapcsol\u00f3dnak. Ennek k\u00f6vetkezt\u00e9ben ezek az optimaliz\u00e1ci\u00f3k miatt az «CONCURRENTLY» m\u00f3dban l\u00e9trehozott indexekbe nem ker\u00fcltek be azok a heap-mem\u00f3ri\u00e1ban tal\u00e1lhat\u00f3 tuple-ok, amelyeket index l\u00e9trehoz\u00e1sa sor\u00e1n friss\u00edtettek vagy cs\u00f6kkentettek.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0421\u0423\u0411\u0414 PostgreSQL 14.4, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430, \u043f\u0440\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u043e\u0431\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430\u0445 \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043d\u0435\u0437\u0430\u043c\u0435\u0442\u043d\u043e\u043c\u0443 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044e \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0438\u043d\u0434\u0435\u043a\u0441\u0430\u0445 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 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\u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104434","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47PostgreSQL 14.4 friss\u00edt\u00e9s indexk\u00e1rosod\u00e1s jav\u00edt\u00e1ssal | ProHoster","description":"Kib\u0151v\u00edtett kiad\u00e1s k\u00e9sz\u00fclt a PostgreSQL 14.4 adatb\u00e1ziskezel\u0151b\u0151l, amelyben orvosolt\u00e1k azt a s\u00falyos probl\u00e9m\u00e1t, amely bizonyos k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt \u00e9szrev\u00e9tlen 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