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Re: [COMMITTERS] pgsql: Augment WAL records for btree delete with GetOldestXmin() to

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [COMMITTERS] pgsql: Augment WAL records for btree delete with GetOldestXmin() to
Date: 2010-01-29 19:04:17
Message-ID: 8189.1264791857@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-committerspgsql-hackers
sriggs(at)postgresql(dot)org (Simon Riggs) writes:
> Log Message:
> -----------
> Augment WAL records for btree delete with GetOldestXmin() to reduce
> false positives during Hot Standby conflict processing. Simple
> patch to enhance conflict processing, following previous discussions. 
> Controlled by parameter minimize_standby_conflicts = on | off, with
> default off allows measurement of performance impact to see whether
> it should be set on all the time.

WTF?  Simon, this seems to be getting way way beyond anything the
community has agreed to.  Particularly, inventing GUCs is not something
to be doing without consensus.

			regards, tom lane

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