Open Stack

On 10/10/18 1:35 PM, Jay Pipes wrote:
> +tc topic
> 
> On 10/10/2018 11:49 AM, Fox, Kevin M wrote:
>> Sorry. Couldn't quite think of the name. I was meaning, openstack 
>> project tags.
> 
> I think having a tag that indicates the project is no longer using 
> SELECT FOR UPDATE (and thus is safe to use multi-writer Galera) is an 
> excellent idea, Kevin. ++

I would support such a tag, especially if it came with detailed 
instructions on how to audit your code to make sure you are not doing 
this with sqlalchemy. (Bonus points for a flake8 plugin that can be 
enabled in the gate.)

(One question for clarification: is this actually _required_ to use 
multi-writer Galera? My previous recollection was that it was possible, 
but inefficient, to use SELECT FOR UPDATE safely as long as you wrote a 
lot of boilerplate to restart the transaction if it failed.)

> -jay
> 
>> ________________________________________
>> From: Jay Pipes [jaypipes at gmail.com]
>> Sent: Tuesday, October 09, 2018 12:22 PM
>> To: openstack-dev at lists.openstack.org
>> Subject: Re: [openstack-dev] [kolla] add service discovery, proxysql, 
>> vault, fabio and FQDN endpoints
>>
>> On 10/09/2018 03:10 PM, Fox, Kevin M wrote:
>>> Oh, this does raise an interesting question... Should such 
>>> information be reported by the projects up to users through labels? 
>>> Something like, "percona_multimaster=safe" Its really difficult for 
>>> folks to know which projects can and can not be used that way currently.
>>
>> Are you referring to k8s labels/selectors? or are you referring to
>> project tags (you know, part of that whole Big Tent thing...)?
>>
>> -jay
>>
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