Re: Terminating a backend

Bruce Momjian wrote:
> I have an idea for this TODO item:
> 
>     * Allow administrators to safely terminate individual sessions either
>       via an SQL function or SIGTERM
>     
>       Lock table corruption following SIGTERM of an individual backend
>       has been reported in 8.0.  A possible cause was fixed in 8.1, but
>       it is unknown whether other problems exist.  This item mostly
>       requires additional testing rather than of writing any new code.
>     
>       http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php
> 
> When we get the termination signal, why can't we just set a global
> boolean, do a query cancel, and in the setjmp() code block check the
> global and exit --- at that stage we know we have released all locks and
> can exit cleanly.

Should I add this as a TODO?  Seems so.  Tom commented in the patches
queue that it will not work but I don't understand why.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://postgres.enterprisedb.com
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