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Created August 26, 2012 08:04
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Data Intensive Text Processing with MapReduce #3 figure3.8.x Partitioner
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gistfile1.java
package info.moaikids.mapred.partitioner;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Partitioner;
public class Figure38xPartitioner extends Partitioner<Text, IntWritable> {
@Override
public int getPartition(Text key, IntWritable value, int numPartitions) {
String[] params = key.toString().split(" ");
return (params[0].hashCode() & Integer.MAX_VALUE) % numPartitions;
}
}
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