BUG #17399: Dead tuple number stats not updated on long running queries

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Тема BUG #17399: Dead tuple number stats not updated on long running queries
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Msg-id 17399-3dde82c18cf8e957@postgresql.org
обсуждение исходный текст
Ответы Re: BUG #17399: Dead tuple number stats not updated on long running queries  (Soni M <diptatapa@gmail.com>)
Re: BUG #17399: Dead tuple number stats not updated on long running queries  (Andres Freund <andres@anarazel.de>)
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The following bug has been logged on the website:

Bug reference:      17399
Logged by:          Soni
Email address:      diptatapa@gmail.com
PostgreSQL version: 13.5
Operating system:   Red Hat Enterprise Linux release 8.5 (Ootpa)
Description:

Hello All,
I think I found a bug.

While there are long running queries, a vacuum that start and end during the
long running queries, the stats of pg_stat_user_tables.n_dead_tup not
updated. The real dead tuple on the table is cleaned up, but not the
stats.
So, if dead tuple percentage on pg_stat_user_tables is above
autovacuum_vacuum_scale_factor, then the autovacuum keeps triggered during
the long running queries.

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