-Re: Set the number of mapper in hive
Nitin Pawar 2012-12-07, 09:48
On Dec 7, 2012 3:09 PM, "Philips Kokoh Prasetyo" <[EMAIL PROTECTED]>
> Hi Nitin,
> Thanks for the reply.
> Do you mean using fair scheduler to separate job queue?
> On Fri, Dec 7, 2012 at 5:15 PM, Nitin Pawar <[EMAIL PROTECTED]>wrote:
>> ways to handle this
>> 1) create separate job queues for hive and hbase users on jt and allocate
>> resources according to your needs
>> 2) you can not actually limit how many maps can be launched as its
>> decided on run time by looking at split size. If you want less number of
>> maps to be launched then increase split size...also keep in mind you will
>> need larger memory for maps
>> On Dec 7, 2012 2:32 PM, "Philips Kokoh Prasetyo" <[EMAIL PROTECTED]>
>>> Hi everyone,
>>> My cluster also runs HBase for real time processing. Hive query (on a
>>> big table) occupies all the map tasks so that the other service cannot run
>>> Does anyone know how to limit the number of running map in hive?
>>> I see mapred.reduce.tasks in the configuration properties, but I don't
>>> see the configuration for mapper.
>>> Thank you.