no ideas?
--
Sebastian Mork
[EMAIL PROTECTED]
--
On Mon, 06 Mar 2006 19:46:53 +0100
Sebastian Mork <[EMAIL PROTECTED]> wrote:
> Hi,
> is it not possible to lock federated tables (creating a lock on the remote
> machine to lock the table on the machine containing the data?)
>
> I've a situation where I have some different databases on different servers
> but they share a small amount of tables that are physically stored on only
> one machine.
> the other (remote) servers use these table as federated tables.
>
> on the server where the data is stored physically in a myIsam-table I can
> lock the table, insert some data and unlock it.
> I've made some tests where I create a write lock, then call 1 queries to
> insert some data (when starting these queries I created a new request that
> tries to insert data) then the first request unlocks the table and the second
> request runs when the unlock is done. great.
> but when I try to run a lock on a federated table it has no effect, I try to
> lock the table, insert 1 rows and unlock the table again. but when I'm
> running a second request while the 1 rows are inserted the second request
> doesnt wait for the table to be unlocked, the data is inserted while the
> first request is made.
>
> here is my request thats starting first: (some pseudo-style code)
> ---
> lock tables tbl_lager write;
> do from 1 to 1
> INSERT INTO `tbl_lager` (`fld_pid`) VALUES ('1');
> end do
> unlock tables;
> unlocked at #now()#
>
> and heres the second that starts when the first is running:
> ---
> lock tables tbl_lager write;
> INSERT INTO `tbl_lager` (`fld_pid`) VALUES ('1');
> unlock tables;
> unlocked at #now()#
>
>
> doing this local ob the server where the data is stored physically it works
> fine.
> but on the federated table it doesn't work.
>
> Any comments would be great. thx.
> --
> Sebastian Mork <[EMAIL PROTECTED]>
>
>
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--
Sebastian Mork <[EMAIL PROTECTED]>
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