There has been some discussion on federated clusters on this list before. Probably @bmahler can add some more thoughts here. Apart from the issue of stabilizing the Master quorum there is also the issue of scheduling, i.e., how do frameworks decide which set of nodes, NY or Longond, to schedule a job on? Or put another way which resources to accept (from nodes in NY or London) for which tasks?
On Fri, Dec 2, 2016 at 12:12 PM, Alexander Gallego <agall...@concord.io> wrote: > > > On Fri, Dec 2, 2016 at 3:04 PM, Rodrick Brown <rodr...@orchard-app.com> > wrote: > >> How feasible is it to run Mesos across a private WAN. >> >> I have two data centers and private fiber between each location latency >> is about 80ms between both locations. >> My thinking is to run 5 masters Three in NY and 2 in London same setup >> for Zookeeper. >> I have about 120 nodes in NYC and 80 nodes in London. >> >> Or should I just create two silo clusters of 3 masters in each region. >> > > If you do, you miss the opportunity of doing oversubscriptions. i.e.: say > NY is overloaded, you might want to move computations to London on a > pre-emptable schedule. > > iff you can get zookeeper to be stable then you can do this. > > if you only have 2 locations might not be a good idea as the leader > election is about consistency, so your cluster might not be able to launch > new work during a partition. > > >> >> Thanks. >> >> -- >> >> RB >> >> *NOTICE TO RECIPIENTS*: This communication is confidential and intended >> for the use of the addressee only. If you are not an intended recipient of >> this communication, please delete it immediately and notify the sender >> by return email. Unauthorized reading, dissemination, distribution or >> copying of this communication is prohibited. This communication does not >> constitute >> an offer to sell or a solicitation of an indication of interest to purchase >> any loan, security or any other financial product or instrument, nor is it >> an offer to sell or a solicitation of an indication of interest to purchase >> any products or services to any persons who are prohibited from receiving >> such information under applicable law. The contents of this communication >> may not be accurate or complete and are subject to change without notice. >> As such, Orchard App, Inc. (including its subsidiaries and affiliates, >> "Orchard") makes no representation regarding the accuracy or >> completeness of the information contained herein. The intended recipient is >> advised to consult its own professional advisors, including those >> specializing in legal, tax and accounting matters. Orchard does not >> provide legal, tax or accounting advice. >> > > > > -- > > > > > > Alexander Gallego > Co-Founder & CTO > -- Avinash Sridharan, Mesosphere +1 (323) 702 5245
