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(This was first used at a meetup conducted on 27th July 2013. See http://www.meetup.com/expertalks/events/128657552/) (Also, see install.README.txt) 1) Simulating MapReduce: cat words.txt | ruby map.rb | sort | ruby reduce.rb 2) Create HDFS locations and copy input files hadoop fs -mkdir /user/cloudera/data/splitInput hadoop fs -rmr /user/cloudera/data/output hadoop fs -put words/* /user/cloudera/data/splitInput/ 3) Using MapReduce on Hadoop: ./mapReduce.sh (Instructions from part 2 meetup. See http://www.meetup.com/expertalks/events/132508222/) See the data, pig scripts, and awk scripts under m2 # To run pig in local mode, ensure the file is available on the local filesystem at the path specified and use $ pig -x local pigScript.pig # To run pig with Hadoop, ensure the file to load is in HDFS, and use: $ hadoop fs -put dataInputFile $ pig pigScript.pig END-OF-FILE
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