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 >> >
