Hello Dmitry,
Do you have any idea when this may be fixed? We would love to get back
to 5.5 to behave like 5.1 for our feature.
Thanks
-Zardosht
On Mon, Apr 11, 2011 at 2:29 AM, Dmitry Lenev <Dmitry.Lenev@stripped> wrote:
> Hello, Zardosht!
>
> * Zardosht Kasheff <zardosht@stripped> [11/04/09 03:43]:
>> In MySQL 5.1, a storage engine can allow other threads to write to a
>> table while an index (via handler::add_index) is being created. To do
>> so, one can set the lock_type to TL_WRITE_ALLOW_WRITE when
>> handler::store_lock is called.
>>
>> In MySQL 5.5, this does not work, because a "metadata lock", or MDL
>> has been added to the system. Is there any way to get this to work in
>> MySQL 5.5?
>
> I don't think it is possible to do this in MySQL 5.5.
> We work on alleviating this issue in future releases.
>
> --
> Dmitry Lenev, Software Developer
> Oracle Development SPB/MySQL, www.mysql.com
>
> Are you MySQL certified? http://www.mysql.com/certification
>
