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MapReduce >> mail # user >> problem about DN&NM directory design

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problem about DN&NM directory design
       i plan to put DN together with NM, i want to use 2*1TB disk , one
disk mount on /data/1 and another mount on /data/2

and i set dfs.datanode.data.dir as "/data/1/hadoopdataspace
set yarn.nodemanager.local-dirs as "/data/1/yarn/local ,/data/2/yarn/local"
set yarn.nodemanager.log-dirs as "/data/1/yarn/logs,/data/2/yarn/logs",
i do not kown if this plan is appropriate ,any good suggestion ,thanks all?