Re: BUG #15000: Cache lookup failure

Tom Lane schrieb am 08.01.2018 um 16:35:
> OK.  The explanation then presumably is that something is dropping that
> table concurrently with the pg_dump run.  It remains unclear to me why
> pg_dump is failing to protect itself against such a drop, but before we
> can figure that out, we need to be able to reproduce the situation.
>
>
> Can you identify anything that would be dropping tables concurrently
> with this script?

I feel ashamed :( 

There was a left over pipe symbol in the script that we didn't see:

  pg_dump --table=l10n --table=l10n_value --clean ${db_stag} |
  psql --single-transaction --dbname=${db_prod} --file=${backup_stag}

So pg_dump pipes a script with DROP statement into psql, which then 
runs essentially the same script again which was created in a previous step (also with --clean) 

Seeing my (stupid) mistake, I am not sure if this is supposed to work or not...

Thomas