From: Michael Widenius
Date: May 13 2009 11:28pm
Subject: Re: MySQL Reengineering Project
List-Archive: http://lists.mysql.com/internals/36677
Message-Id: <18955.22444.136492.469664@narttu.askmonty.org>
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Hi!

>>>>> "Alex" =3D=3D Alex Esterkin <aesterkin@stripped> writes:

Alex> On Tue, May 12, 2009 at 4:36 PM, Brian Aker <brian@stripped> w=
rote:
>> Hi!
>>=20
>> On May 12, 2009, at 12:13 PM, Alex Esterkin wrote:
>>=20
>>> =A0For all semantic
>>> purposes, THD=3DSession.
>>=20
>>=20
>> A Session object can be moved across scheduler objects, there is no =
1=3D1
>> ratio in Drizzle between Session and Thread.

Alex> This is exactly the point I am making.   In Drizzle, you  renamed=
 THD
Alex> into Session and decoupled threads and sessions - exactly the way=
 it
Alex> should be.   In MySQL, THD is both, a thread and a session state
Alex> holder, and it should only hold the latter.

Not true in MariaDB or MySQL 6.0

With the pool-of-threads patch, THD becomes much closer to a session.

Regards,
Monty