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Hive >> mail # user >> Set the number of mapper in hive


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Philips Kokoh Prasetyo 2012-12-07, 09:02
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Nitin Pawar 2012-12-07, 09:15
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Philips Kokoh Prasetyo 2012-12-07, 09:38
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Re: Set the number of mapper in hive
Yes
On Dec 7, 2012 3:09 PM, "Philips Kokoh Prasetyo" <[EMAIL PROTECTED]>
wrote:

> Hi Nitin,
>
> Thanks for the reply.
> Do you mean using fair scheduler to separate job queue?
> http://hadoop.apache.org/docs/r0.20.2/fair_scheduler.html
>
>
> Regards,
> Philips
>
>
> 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]>
>> wrote:
>>
>>> 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
>>> properly.
>>> 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.
>>>
>>> Regards,
>>> Philips
>>>
>>
>
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Philips Kokoh Prasetyo 2012-12-07, 11:44
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB