README.md

Run map demo:

mvn clean package
spark-submit --class map.Main target/.../..jar

Run filter demo:

mvn clean package
spark-submit --class filter.Main target/.../..jar

Run groupByKey demo:

mvn clean package
spark-submit --class groupbykey.Main target/.../..jar

Run reduceByKey demo:

mvn clean package
spark-submit --class reducebykey.Main target/.../..jar