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From Bikas Saha <bi...@hortonworks.com>
Subject RE: More than one RM in YARN?
Date Wed, 19 Sep 2012 17:18:46 GMT
If I understand you correctly, your target scenario is failover?

Its good to know that you have something that works for you right now.


-----Original Message-----
From: Chris Riccomini [mailto:criccomini@linkedin.com]
Sent: Wednesday, September 19, 2012 10:06 AM
To: mapreduce-dev@hadoop.apache.org
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.


On 9/19/12 10:05 AM, "Bikas Saha" <bikas@hortonworks.com> wrote:

>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?
>-----Original Message-----
>From: Harsh J [mailto:harsh@cloudera.com]
>Sent: Tuesday, September 18, 2012 9:37 PM
>To: mapreduce-dev@hadoop.apache.org
>Subject: Re: More than one RM in YARN?
>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
>> 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

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