We have had up to 50 dags with multiple tasks each. Many of them run in 
parallel, we've had some issues with compute as it was meant to be a temporary 
deployment but somehow it's now the permanent production one and resources are 
not great. 
Oranisationally it is very similar to what Gerard described. More than one 
group working with different engineering practices and standards, this is 
probably one of the sources of problems. 

-----Original Message-----
From: Gerard Toonstra <[email protected]> 
Sent: Wednesday, June 6, 2018 5:02 PM
To: [email protected]
Subject: Re: Single Airflow Instance Vs Multiple Airflow Instance

We are using two cluster instances. One cluster is for the engineering teams 
that are in the "tech" wing and which rigorously follow tech principles, the 
other instance is for use by business analysts and more ad-hoc, experimental 
work, who do not necessarily follow the principles. We have a nomad engineer 
helping out the ad-hoc cluster, setting it up, connecting it to all systems and 
resolving programming questions. All clusters are fully puppetized, so we reuse 
configs and ways how things are configured, plus have a common "platform code" 
package that is reused across both clusters.

G>


On Wed, Jun 6, 2018 at 5:50 PM, James Meickle <[email protected]>
wrote:

> An important consideration here is that there are several settings 
> that are cluster-wide. In particular, cluster-wide concurrency 
> settings could result in Team B's DAG refusing to schedule based on an error 
> in Team A's DAG.
>
> Do your teams follow similar practices in how eagerly they ship code, 
> or have similar SLAs for resolving issues? If so, you are probably 
> fine using co-tenancy. If not, you should probably talk about it first 
> to make sure the teams are okay with co-tenancy.
>
> On Wed, Jun 6, 2018 at 11:24 AM, [email protected] < 
> [email protected]> wrote:
>
> > Hi Everyone,
> >
> > We have been experimenting with airflow for about 6 months now.
> > We are planning to have multiple departments to use it. Since we 
> > don't have any internal experience with Airflow we are wondering if 
> > single instance per department is more suited than single instance 
> > with multi-tenancy? We have been aware about the upcoming release of 
> > airflow
> > 1.10 and changes that will be made to the RBAC which will be more 
> > suited for multi-tenancy.
> >
> > Any advice on this ? Any tips could be helpful to us.
> >
>

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