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Re: Do we need so many hint bits?

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Atri Sharma <atri.jiit@gmail.com>
Cc: Andres Freund <andres@2ndquadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>, Pg Hackers <pgsql-hackers@postgresql.org>, Merlin Moncure <mmoncure@gmail.com>
Date: 2012-11-19T18:46:37Z
Lists: pgsql-hackers 
On Tue, 2012-11-20 at 00:13 +0530, Atri Sharma wrote:

> My mistake...I thought we were more concerned about the cost of
> locking.
> 
> I agree, locking many data pages simultaneously could be hazardous.
> 
> This requires more thought.Maybe removing PD_ALL_VISIBLE isnt such a
> great idea after all...

As I said elsewhere in the thread, I'm not planning to introduce any
additional locking. There is already precedent in IndexOnlyNext.

Regards,
	Jeff Davis