edu.umn.cs.spatialHadoop.visualization

Class SingleLevelPlot.NoPartitionPlot

java.lang.Object

MapReduceBase

edu.umn.cs.spatialHadoop.visualization.SingleLevelPlot.NoPartitionPlot

Enclosing class:

SingleLevelPlot

public static class SingleLevelPlot.NoPartitionPlot
extends MapReduceBase

Visualizes a dataset using the existing partitioning of a file. The mapper creates a partial raster layer for each partition while the reducer merges the partial rasters together into the final raster layer. The final raster layer is then written to the output.

Author:

Ahmed Eldawy

Constructor Summary

Constructors

Constructor and Description
SingleLevelPlot.NoPartitionPlot()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(JobConf job)
void	map(Rectangle partitionMBR, java.lang.Iterable<? extends Shape> shapes, output, Reporter reporter)
void	reduce(IntWritable key, java.util.Iterator<RasterLayer> intermediateLayers, output, Reporter reporter)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SingleLevelPlot.NoPartitionPlot

public SingleLevelPlot.NoPartitionPlot()

Method Detail

configure

public void configure(JobConf job)

map

public void map(Rectangle partitionMBR,
       java.lang.Iterable<? extends Shape> shapes,
        output,
       Reporter reporter)
         throws java.io.IOException

Throws:

java.io.IOException

reduce

public void reduce(IntWritable key,
          java.util.Iterator<RasterLayer> intermediateLayers,
           output,
          Reporter reporter)
            throws java.io.IOException

Throws:

java.io.IOException