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Bogus temp file reporting?

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Hello,

Is there a known issue with temp file reporting?  I have a production db that is reporting 231TB of temp space usage, which can’t be true.  temp_blks_written in pg_stat_statements sort of confirms this, as the reported queries show just a few MB of temp space usage.  I suspect a reboot will clear this (to do) and wanted to check with you to see if someone else has had similar experiences.

Regards,
Kiriakos Georgiou


select version();
                                                              version                                                             
-----------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 14.8 (Ubuntu 14.8-1.pgdg20.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, 64-bit
(1 row)
 
 
select           
    datname,
    temp_files as "# of temp files",
    pg_size_pretty(temp_bytes) as "size of temp files"
from
pg_stat_database;

   datname     | # of temp files | size of temp files
---------------+-----------------+--------------------
               |               0 | 0 bytes
postgres       |               0 | 0 bytes
testdb         |          269647 | 231 TB
template0      |               0 | 0 bytes
template1      |               0 | 0 bytes

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