Sorry i meant integration with Cassandra (based on the docs by default it suggests MySQL)
On Sunday, August 16, 2015, John Wong <gokoproj...@gmail.com> wrote: > There is no leader in cassandra. I suggest you ask Azkaban community about > intgteation with Azkaban and Azkaban HA. > > On Sunday, August 16, 2015, Vikram Kone <vikramk...@gmail.com > <javascript:_e(%7B%7D,'cvml','vikramk...@gmail.com');>> wrote: > >> Can't we use zoo keeper for leader election in Cassandra and based on who >> is leader ..run azkaban or any app instance for that matter on that >> Cassandra server. I'm thinking that I can copy the applocation folder to >> all nodes and then determine which one to run using zookeeper. Is that >> possible ? >> >> Sent from Outlook <http://aka.ms/Ox5hz3> >> >> >> >> >> On Sun, Aug 16, 2015 at 6:47 AM -0700, "John Wong" <gokoproj...@gmail.com >> > wrote: >> >> Hi >>> >>> I am not familiar with Azkaban and probably a better question to the >>> Azkaban community IMO. But there seems to be two modes ( >>> http://azkaban.github.io/azkaban/docs/2.5/) one is solo and one is >>> two-server mode, but either way I think still SPOF? If there is no >>> election, just based on process, my 2 cents would be monitor, alert, and >>> start the process somewhere else. Better yet, don't install the process on >>> Cassandra node. Keep your instance for one purpose only. If you run cloud >>> like AWS you will be able to autoscale min1 max1 easily. >>> >>> >>> Note: In peer-to-peer architecture, there is simply no concept of >>> master. You can start with some seed nodes for discovery. It depends how >>> you design discovery. >>> >>> On Sat, Aug 15, 2015 at 11:49 AM, Vikram Kone <vikramk...@gmail.com> >>> wrote: >>> >>>> Hi, >>>> We are planning to install Azkaban in solo server mode on a 24 >>>> node cassandra cluster to be able to schedule spark jobs with intricate >>>> dependency chain. The problem, is since Cassandra has a no-SPOF >>>> architecture ie any node can become the master for the cluster, it creates >>>> the problem for Azkaban master since it's not a peer-peer architecture >>>> where any node can become the master. Only a single mode has to be master >>>> at any given time. >>>> >>>> What are our options here? Are there any framworks or tools out there >>>> that would allow any application to run on a cluster of machines with high >>>> availablity? >>>> Should I be looking at something like zookeeper for this ? Or Mesos may >>>> be? >>> >>> >>> > > -- > Sent from Jeff Dean's printf() mobile console > -- Sent from Jeff Dean's printf() mobile console
