We just had two running by accident for some period of time. On Feb 24, 2017 5:52 AM, "Jason Jho" <jason....@blueapron.com.invalid> wrote:
> Hi Dan / Sid, > > Would you be able to elaborate on the multiple scheduler setup? Curious how > that would have been deployed. Was the purpose to have some kind of > failover or to distribute execution of jobs? > > Thanks! > On Fri, Feb 24, 2017 at 3:49 AM Dan Davydov <dan.davy...@airbnb.com. > invalid> > wrote: > > > Fwiw Airbnb was running multiple schedulers for a short while on 1.7.1 > and > > we didn't seem to have issues. > > > > On Feb 24, 2017 12:25 AM, "Bolke de Bruin" <bdbr...@gmail.com> wrote: > > > > > While I agree with the assessment of Sid that a lot has changed and we > do > > > not officially test on multiple schedulers, many changes were in the > area > > > of proper locking which benefit multiple schedulers. In addition the > > tasks > > > themselves have built in checks that they don’t run twice at the same > > time. > > > > > > Yet YMMV. > > > > > > Bolke > > > > > > > On 24 Feb 2017, at 03:13, siddharth anand <san...@apache.org> wrote: > > > > > > > > I did run 2 or more schedulers with Local Executors up until mid > last > > > > year. There have been enough changes to the code and feature > additions > > > that > > > > I don't think this is a recommended practice at this point. Also, > there > > > is > > > > not a lot of synchronization in the scheduler to ensure this will > work. > > > > > > > > -s > > > > > > > > On Thu, Feb 9, 2017 at 6:47 AM, matus valo <matusv...@gmail.com> > > wrote: > > > > > > > >> Hi all, > > > >> > > > >> > > > >> > > > >> I am considering deployment of airflow as pipeline framework. I have > > > found > > > >> out multiple articles explaining deployment of airflow in > distributed > > > >> environment (e.g. [1]). Unfortunately, I was not able to find out > any > > > use > > > >> case where scheduler is deployed distributed on multiple nodes. Is > it > > > >> possible to have scheduler distributed on multiple nodes to prevent > > > single > > > >> point of failure? I haven’t found any mention about it in > > > documentation. I > > > >> have found out in [2] that it is not possible but on the other hand > in > > > [3] > > > >> is reference that this can be solved in new version of airflow. > > > >> > > > >> > > > >> > > > >> Thanks, > > > >> > > > >> > > > >> Matus > > > >> > > > >> > > > >> > > > >> [1] http://site.clairvoyantsoft.com/setting-apache-airflow-cluster/ > > > >> > > > >> [2] > > https://groups.google.com/forum/#!topic/airbnb_airflow/-1wKa3OcwME > > > >> > > > >> [3] https://issues.apache.org/jira/browse/AIRFLOW-678 > > > >> > > > > > > > > >
