[KernelDensity analysis on Hadoop MapReduce] (http://thunderheadxpler.blogspot.com/2013/03/bigdata-kernel-density-analysis-on.html "KernelDensity analysis on Hadoop MapReduce")
You can create a sample set to test the process:
$ hadoop fs -mkdir points
$ awk -f points.awk | hadoop fs -put - points/points.tsv
$ mvn -P cdh4 clean package appassembler:assemble
$ sh target/appassembler/bin/KernelDensity
$ mvn -P cdh3 clean package appassembler:assemble
$ sh target/appassembler/bin/KernelDensity