maria-developers team mailing list archive

[Kristian Nielsen <knielsen@xxxxxxxxxxxxxxx>]

Zardosht Kasheff <zardosht@xxxxxxxxx> writes:

> to implement commit_ordered, I would like to. I think what you are
> stating is that if the handlerton does some bookkeeping of
> transactions that have been prepared, then when
> commit_checkpoint_request is called, we can use this bookkeeping to
> properly call commit_checkpoint_notify_ha when all the prepared
> transactions finish committing. This bookkeeping would need to be done

Yes, exactly.

> anyway, so it might as well be done in our handlerton so that
> complexity is reduced for engines that implement commit_ordered. If
> this is accurate, then this sounds reasonable and I look forward to
> this working for 10.0.

Ok, that sounds great!

> I also (now) realize that MySQL 5.6 serializes commits which is
> probably a performance issue for us. I have started a thread on the
> internals MySQL list and hope to learn more on that thread.

Yes, it will be interesting to follow. Hopefully some solution will arise.

> accurate. At this point, here is what I hope we can do for 10.0:
>  - not implement commit_ordered
>  - do some bookkeeping in our handlerton to be able to implement
> commit_checkpoint_request

Sounds reasonable.

 - Kristian.