The following bug has been logged online:

Bug reference: 2013
Logged by: Joel Stevenson
Email address: joelstevenson (AT) mac (DOT) com
PostgreSQL version: 8.1b3
Operating system: RHEL 3
Description: Assertion Failure
Details:

TRAP: FailedAssertion("!(!(tp.t_data->t_infomask & 0x0800))", File:
"heapam.c", Line: 1410)

This occured during a nightly mainentance run which sets the transaction
isolation level to SERIALIZABLE, moves records from 3 highly active tables
to 3 storage tables by creating a temp table and selecting candidate record
ids into it, then using that list via sub-select for the move ala "insert
into blah_storage (f1, f2, f3) select f1, f2, f3 from blah_active where f1
in (select f1 from move_records_tmp)"

After the move a VACUUM FULL ANALYZE is issued. It appears from the logs
written by the maintenace script that the assertion failure occured during
the vacuum.

I will install RC1 and see if it can be reproduced.

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Joel Stevenson wrote:

Please be sure to also configure with --enable-debug (you obviously
already have --enable-cassert), and get a stack trace ("bt" command in
gdb) if at all possible. And keep the core dump somewhere safe -- we
will ask you questions about it.

If you already have a core dump, please provide a stack trace.

--
Alvaro Herrera http://www.advogato.org/person/alvherre
"La naturaleza, tan frágil, tan expuesta a la muerte... y tan viva"

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