--20cf307f37d287c6ec04a7a4fae3
Content-Type: text/plain; charset=ISO-8859-1

Low Priority Lock

Hello was wondering if anybody would have some input:

This will be on the same table.

Client (A) acquires a READ lock;
immediately thereafter a large amount of clients wait for a read lock as
well, and client(B) requests a LOW PRIORITY insert.

Another surge of clients request read locks as client(C) requests a INSERT
lock.

The last of the read locks are finished selecting.

Does client (B) or (C) acquire their lock first?

Will it go by priority or in order which the requests were received.

I could not find documentation in forums or MySQL reference regarding this.

Thanks!

--20cf307f37d287c6ec04a7a4fae3--

Client C - LOW PRIORITY inserts will always wait until absolutely no other processes are using a table.

----- Original Message -----
> From: "Jon Siebert" <jon.siebert1 [at] gmail.com>
> To: mysql [at] lists.mysql.com
> Sent: Saturday, 9 July, 2011 5:54:58 PM
> Subject: Low priority write
>
> Low Priority Lock
>
> Hello was wondering if anybody would have some input:
>
> This will be on the same table.
>
> Client (A) acquires a READ lock;
> immediately thereafter a large amount of clients wait for a read lock
> as
> well, and client(B) requests a LOW PRIORITY insert.
>
> Another surge of clients request read locks as client(C) requests a
> INSERT
> lock.
>
> The last of the read locks are finished selecting.
>
> Does client (B) or (C) acquire their lock first?
>
> Will it go by priority or in order which the requests were received.
>
> I could not find documentation in forums or MySQL reference regarding
> this.
>
> Thanks!
>

--
Bier met grenadyn
Is als mosterd by den wyn
Sy die't drinkt, is eene kwezel
Hy die't drinkt, is ras een ezel

--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql?unsub=gcdmg-mysql-2 [at] m.gmane.org