Re: BUG #17245: Index corruption involving deduplicated entries
От | Kamigishi Rei |
---|---|
Тема | Re: BUG #17245: Index corruption involving deduplicated entries |
Дата | |
Msg-id | 308eb378-dce3-0529-e6ee-eb8e4ea026f7@koumakan.jp обсуждение исходный текст |
Ответ на | Re: BUG #17245: Index corruption involving deduplicated entries (Peter Geoghegan <pg@bowt.ie>) |
Список | pgsql-bugs |
On 30.10.2021 21:46, Peter Geoghegan wrote: > > Attached is a draft patch that fixes the problem. Thank you! Going to install the patched version on the production system to see how it fares (and I expect good things). Tried against the re-extracted snapshot, looks good (everything still needs reindexing, obviously, but that is beside the point right now): azurlane_wiki=# vacuum verbose mediawiki.page; INFO: vacuuming "mediawiki.page" INFO: launched 2 parallel vacuum workers for index vacuuming (planned: 2) INFO: scanned index "page_len" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_main_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.05 s INFO: scanned index "page_mediawiki_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_project_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_talk_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_user_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_utalk_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: scanned index "page_pkey" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.07 s INFO: scanned index "page_redirect_namespace_len" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.08 s INFO: scanned index "page_random" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.14 s INFO: scanned index "name_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.19 s INFO: scanned index "ts2_page_title" to remove 251 row versions DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.04 s INFO: table "page": removed 251 dead item identifiers in 215 pages DETAIL: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s INFO: index "page_pkey" now contains 46056 row versions in 131 pages DETAIL: 190 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "name_title" now contains 46056 row versions in 330 pages DETAIL: 211 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_len" now contains 51848 row versions in 61 pages DETAIL: 681 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_main_title" now contains 3569 row versions in 18 pages DETAIL: 147 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_mediawiki_title" now contains 15 row versions in 2 pages DETAIL: 0 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_project_title" now contains 1 row versions in 2 pages DETAIL: 0 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_random" now contains 46056 row versions in 127 pages DETAIL: 251 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_redirect_namespace_len" now contains 47663 row versions in 68 pages DETAIL: 265 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_talk_title" now contains 35 row versions in 2 pages DETAIL: 0 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_user_title" now contains 735 row versions in 6 pages DETAIL: 6 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "page_utalk_title" now contains 44 row versions in 2 pages DETAIL: 0 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: index "ts2_page_title" now contains 46056 row versions in 211 pages DETAIL: 251 index row versions were removed. 0 index pages were newly deleted. 0 index pages are currently deleted, of which 0 are currently reusable. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. INFO: table "page": found 14 removable, 44250 nonremovable row versions in 876 out of 912 pages DETAIL: 0 dead row versions cannot be removed yet, oldest xmin: 2097658 Skipped 0 pages due to buffer pins, 0 frozen pages. CPU: user: 0.00 s, system: 0.01 s, elapsed: 0.50 s. INFO: vacuuming "pg_toast.pg_toast_19560" INFO: table "pg_toast_19560": found 0 removable, 0 nonremovable row versions in 0 out of 0 pages DETAIL: 0 dead row versions cannot be removed yet, oldest xmin: 2097658 Skipped 0 pages due to buffer pins, 0 frozen pages. CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s. VACUUM -- K. R.
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