maria-developers team mailing list archive

[Elena Stepanova <elenst@xxxxxxxxxxxxxxxx>]

Hi Pablo,

On 4/22/2014 10:14 AM, Pablo Estrada wrote:
> Hello Sergei, Elena and everyone,
> I'm Pablo, and I was selected as part of Google Summer of Code 2014 to
> work on the project "*Statistically optimize mysql-test runs by running
> less tests*". First of all, thank you very much for having selected me
> for the project. I am very excited to start reading, reviewing data and
> coding up.
>
> I see that Elena will be my mentor. Nice to meet you Elena : )

Nice to meet you too and welcome!

> To begin with, I am focusing on the *Buildbot documentation*, to
> *(1)understand how the data is organized* inside it, and to *(2)*figure
> out *how to add the extra functionality* into the BuildBot.
>
> I want to get started with the data analysis, so it would be great if
> you could help me with the following things:
>
>  1. Sergei, you said you did a bit of research into this. Do you have
>     your *previous results*, or *any papers* that you have read that you
>     could suggest to me?

I assume you have already seen the JIRA task 
https://mariadb.atlassian.net/browse/MDEV-5776, which gives an overall 
picture of what Sergei had in mind. There was also an email thread which 
contained some information, particularly this email 
https://lists.launchpad.net/maria-developers/msg06972.html.

I suppose if Sergei has something else to add, he will.

>  2. Can I get *access to the buildbot database* to look at the data? If
>     not, can I get the E/R model, or any scheme of *how the data looks
>     like?*

I will send you the current data dump from the buildbot database (or 
rather a link where you can download it from).

>       * I understand that maybe the data is not just a single database.
>         I am starting by *reading the buildbot documentation*, to
>         understand how the stuff is organized in it.

Please note that our current buildbot master is running on version 0.8.5 
in case it makes a difference, I suppose it might.

>  3. *Any other information* that you consider useful for me to know? Any
>     advice?

As Sergei probably mentioned before, and as you will see from the 
buildbot data, it doesn't contain bzr revision IDs, only revision 
numbers. It doesn't matter much as long as you only need to ensure 
uniqueness, as you can always generate fake ones, but it will cause a 
problem when you need to map the results to the real bzr change sets, 
because unlike revIDs, reNos are not not necessarily persistent. In many 
cases they can be restored from bzr logs, but it will require additional 
efforts. We can get back to it if/when you find out that you really need 
them but don't know how to get them.

Regards,
Elena

> And that's all I have for now. I'm looking forward to getting started!
>
> Regards
> Pablo
>
>
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