DC dedicated to Hadoop jobs

[cs...@orange.com]

Hi,

Our Hadoop jobs will only do READs and we want to restrict reads in this dedicated DC  even if performances are bad. 

What can we do to achieve this goal ? 
- set dynamic_snitch_badness_threshold to 0.98 on these DC's nodes ? can we have different dynamic_snitch_badness_threshold values on nodes from different DC ?
- for consistency to LOCAL_QUORUM ? However if we have more than one replica we'll do more reads

thanks
-- 
Cyril SCETBON


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