Hi, everyone? ? I come across with a problem about data locality, i found 
these?example?code in 《Spark-on-YARN-A-Deep-Dive-Sandy-Ryza.pdf》? ??? ??val 
locData = InputFormatInfo.computePreferredLocations(Seq(new 
InputFormatInfo(conf, classOf[TextInputFormat], new Path(“myfile.txt”)))?? ??? 
??val sc = new SparkContext(conf, locData)? ? but i found the two confs above 
are of different types, conf in the first line if of 
type?org.apache.hadoop.conf.Configuration, and conf in the second line is of 
type SparkConf, ?can anyone explain that to me or give me some example code?? ??

qinwei

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