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From Vinod Kumar Vavilapalli <vino...@hortonworks.com>
Subject Re: Automatically mapping a job submitted by a particular user to a specific hadoop map-reduce queue
Date Thu, 25 Apr 2013 20:44:59 GMT
The 'standard' way to do this is using queu-acls to enforce a particular user to be able to
submit jobs to a sub-set of queues and then let the user decide which of that subset of queues
he wishes to submit a job to.

+Vinod Kumar Vavilapalli
Hortonworks Inc.

On Apr 24, 2013, at 6:22 PM, Sagar Mehta wrote:

> Hi Guys,
> We have a general purpose Hive cluster [about 200 nodes] which is used for various jobs
> Production
> Experimental/Research
> Adhoc queries
> We are using the fair-share scheduler to schedule them and for this we have corresponding
3 pools in the scheduler.
> Here is what we want.
> A hive query submitted by a user with user-name A should go to one of the pools above
based on a pre-defined mapping. We are wondering where/how to specify this mapping?
> We can do this manually by adding -Dmapred.job.queue.name="X" on a particular job run.
> This puts the job on the map-reduce queue named "X" and the following configuration in
the fair-share scheduler
>   <property>
>     <name>mapred.fairscheduler.poolnameproperty</name>
>     <value>mapred.job.queue.name</value>
>   </property>
> maps this to a pool named "X" in the fair-share scheduler.
> However we [while wearing our Hadoop developer/admin hat] don't want the user/analyst
to specify that so as to enforce some cluster-use policy.
> Based on his/her username we want to automatically select which hadoop queue and subsequently
which fair-share scheduler pool, his/her job should go to. I'm pretty sure this is a common
use-case and wondering how to do this in Hadoop. 
> Any help/insights/pointers would be greatly appreciated.
> Sagar
> PS - Btw we are using Cloudera cdh3u2 and the user jobs are Hive queries.

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