One more bit of information. The master table has exactly 3 rows
missing. They were all inserted half a year ago within one minute and
no other rows have been inserted in between them.
Is it possible that we lost a consistent piece of data (like a block
or a page)? What can I do to track it down?
I suspect it is a bug in PostgreSQL. Does it resemble an already
submitted issue?
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Konrad Garus