Re: Inaccuracy in VACUUM's tuple count estimates
От | tim_wilson |
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Тема | Re: Inaccuracy in VACUUM's tuple count estimates |
Дата | |
Msg-id | 1403743371788-5809273.post@n5.nabble.com обсуждение исходный текст |
Ответ на | Re: Inaccuracy in VACUUM's tuple count estimates (Andres Freund <andres@2ndquadrant.com>) |
Ответы |
Re: Inaccuracy in VACUUM's tuple count estimates
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Список | pgsql-hackers |
Given that this seems to have slipped off the hackers radar (or in too hard basket) I have constructed a horrible solution. I will stop using autovacuum for this relation , I will use our own system to monitor the relation, and I will reset pgclass.reltuples on this relation after vacuum is done to the correct value. I note that vacuum.c has comments in vac_update_relstat that changes to pg_class are done without a transaction. Are there dangers of my doing an update pg_class set reltuples=60000 where relkind='r' and relname='my_hot_table' ? -- View this message in context: http://postgresql.1045698.n5.nabble.com/Inaccuracy-in-VACUUM-s-tuple-count-estimates-tp5806367p5809273.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com.
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