We are running a test that periodically abruptly kills postgres process(equivalent to kill -9) and restarts it. After running this test for 24 hrs or so, we see duplicate primary key entries in postgres table.
We detect this as we load internal hash-table data-structure in a separate process with primary key entries.
Before hitting this issue we see following warning messages in pg_log
17365 2015-03-24 03:01:42.729 GMTWARNING: page is not marked all-visible but visibility map bit is set in relation "table_foo" page 12 17365 2015-03-24 03:01:42.729 GMTWARNING: page is not marked all-visible but visibility map bit is set in relation "table_foo" page 13
Some information about postgres setup. - 9.2.0 - We use standard configuration with shared_buffer setting as 32MB and checkpoint_timeout as 1 min. - In this particular case postgres replication is not enabled.
Let me know if more information is needed to help understand this issue.
Any help or pointers will be appreciated.
If you really are running 9.2.0 instead of 9.2.10 you should upgrade and reconfirm.
