Re: [HACKERS] Hot Standby utility and administrator functions

From: Zeugswetter Andreas OSB sIT <Andreas(dot)Zeugswetter(at)s-itsolutions(dot)at>
To: Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, "pgadmin-hackers(at)postgresql(dot)org" <pgadmin-hackers(at)postgresql(dot)org>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: [HACKERS] Hot Standby utility and administrator functions
Date: 2008-10-21 07:44:40
Message-ID: 6DAFE8F5425AB84DB3FCA4537D829A561CE07FCB6C@M0164.s-mxs.net
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> > * pg_last_recovered_xact_xid()
> > Will throw an ERROR if *not* executed in recovery mode.
> > returns bigint
> >
> > * pg_last_completed_xact_xid()
> > Will throw an ERROR *if* executed in recovery mode.
> > returns bigint
>
> Should these return xid?

And shouldn't these two be folded together ?
It seems most usages of this xid(/lsn?) will be agnostic to the
recovery mode. Or if not, it seems more convenient to have a function
that returns both recovery mode and xid, no ?

Andreas

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