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Naive Implementation of Machine Learning Algorithms in distributed frameworks MapReduce and Spark

Python 1.56% Scilab 94.93% Java 3.38% Shell 0.13%
knn knn-classification knn-classifier mapreduce mapreduce-java mapreduce-algorithm spark pyspark kmeans-clustering kmeans

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ml-using-mapreduce-and-spark's Issues

Error: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

Hi, when I run the example I found some error which is showed as below:

Error: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at bkmeans$Map.map(bkmeans.java:159)
	at bkmeans$Map.map(bkmeans.java:129)
	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)

It seems out of bound of array centroid, I wonder the reason caused this. Thank you!

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