Hey Bikas, Correct.
Initially, I'd hoped that NMs failed over to appropriate RMs via ZK notifications. When that didn't seem to be implemented, I hoped that RMs, at least kept in sync with each other via ZK, so that I could use a round robin DNS (or HW load balancer) for the RMs. When that didn't seem to be implemented, I decided to just use DNS and a manual failover. Simple is best, I suppose. Cheers, Chris On 9/19/12 10:18 AM, "Bikas Saha" <[email protected]> wrote: >If I understand you correctly, your target scenario is failover? > >Its good to know that you have something that works for you right now. > >Bikas > >-----Original Message----- >From: Chris Riccomini [mailto:[email protected]] >Sent: Wednesday, September 19, 2012 10:06 AM >To: [email protected] >Subject: Re: More than one RM in YARN? > >Hey Bikas, > >Ideally, I'd like to run them concurrently. What I'm discovering is that >this is not (currently) possible, so I'm settling for a manual fail over >using DNS, which should suffice for the time being. > >Cheers, >Chris > >On 9/19/12 10:05 AM, "Bikas Saha" <[email protected]> wrote: > >>Chris, >> >>Could you please elaborate a bit on the use case you are targeting? Do >>you want to run multiple active RM's in the cluster? And they are being >>used concurrently? Or are you talking about failover scenarios? >> >>Bikas >> >>-----Original Message----- >>From: Harsh J [mailto:[email protected]] >>Sent: Tuesday, September 18, 2012 9:37 PM >>To: [email protected] >>Subject: Re: More than one RM in YARN? >> >>Chris, >> >>Not yet, it is coming: >>https://issues.apache.org/jira/browse/MAPREDUCE-4326 should go in >>first, followed by the HA work after it via >>https://issues.apache.org/jira/browse/MAPREDUCE-4345 (Latter isn't a >>dupe of the former exactly). >> >>On Wed, Sep 19, 2012 at 6:12 AM, Chris Riccomini >><[email protected]> >>wrote: >>> Hey Guys, >>> >>> Is anyone running more than one RM on a YARN cluster (backed by ZK)? >>We're looking at this, and I want to know if there's a standard way to >>do it. Are people doing round robin DNS, load balancers, etc? Is it >>possible to configure node managers to have a list of RMs rather than a >single one? >>> >>> Thanks! >>> Chris >> >> >> >>-- >>Harsh J
