public static class PiEstimator.PiMapper extends MapReduceBase implements Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.BooleanWritable,org.apache.hadoop.io.LongWritable>
Constructor and Description |
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PiEstimator.PiMapper() |
Modifier and Type | Method and Description |
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void |
map(org.apache.hadoop.io.LongWritable offset,
org.apache.hadoop.io.LongWritable size,
OutputCollector<org.apache.hadoop.io.BooleanWritable,org.apache.hadoop.io.LongWritable> out,
Reporter reporter)
Map method.
|
close, configure
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
configure
public void map(org.apache.hadoop.io.LongWritable offset, org.apache.hadoop.io.LongWritable size, OutputCollector<org.apache.hadoop.io.BooleanWritable,org.apache.hadoop.io.LongWritable> out, Reporter reporter) throws java.io.IOException
map
in interface Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.BooleanWritable,org.apache.hadoop.io.LongWritable>
offset
- samples starting from the (offset+1)th sample.size
- the number of samples for this mapout
- output {ture->numInside, false->numOutside}reporter
- java.io.IOException
Copyright © 2009 The Apache Software Foundation