On Sun, Sep 14, 2008 at 10:27 AM, Jeremy Zawodny <[EMAIL PROTECTED]> wrote:
> On 9/14/08, MARK CALLAGHAN <[EMAIL PROTECTED]> wrote:
>>
>> This is in a future patch. We have implemented global transactions IDs
>> (http://code.google.com/p/google-mysql-tools/wiki/GlobalTransactionIds)
>> and shared the changes with Mas & Lars. We will publish the patch
>> soon. Hopefully we will have per-event checksums in that patch too.
>
> Checksums for events in the binlog?  Yay!
>
> I've tried to convince the MySQL folks that it's necessary but they want
> "proof" that it's a problem in the real world.  I've never understood why
> they don't understand that network hardware sometimes goes flakey and flips
> bits on you and that annoys MySQL slaves.  It's more than a theoretical
> problem.

They know it is a problem in the real world now and I think checksums
are on the list of things they will implement. There was a bug in the
MySQL master code that caused corrupt events to be sent to slaves when
using flaky network connections. It took them more than a year to fix
it and by the end, it was a really big deal for them.

>
> Jeremy
>
>
>



-- 
Mark Callaghan
[EMAIL PROTECTED]

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