org.apache.hadoop.examples.dancing
Class DistributedPentomino.PentMap
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
org.apache.hadoop.examples.dancing.DistributedPentomino.PentMap
- All Implemented Interfaces:
- Closeable, JobConfigurable, Mapper<WritableComparable,Text,Text,Text>
- Enclosing class:
- DistributedPentomino
public static class DistributedPentomino.PentMap
- extends MapReduceBase
- implements Mapper<WritableComparable,Text,Text,Text>
Each map takes a line, which represents a prefix move and finds all of
the solutions that start with that prefix. The output is the prefix as
the key and the solution as the value.
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DistributedPentomino.PentMap
public DistributedPentomino.PentMap()
map
public void map(WritableComparable key,
Text value,
OutputCollector<Text,Text> output,
Reporter reporter)
throws IOException
- Break the prefix string into moves (a sequence of integer row ids that
will be selected for each column in order). Find all solutions with
that prefix.
- Specified by:
map in interface Mapper<WritableComparable,Text,Text,Text>
- Parameters:
key - the input key.value - the input value.output - collects mapped keys and values.reporter - facility to report progress.
- Throws:
IOException
configure
public void configure(JobConf conf)
- Description copied from class:
MapReduceBase
- Default implementation that does nothing.
- Specified by:
configure in interface JobConfigurable- Overrides:
configure in class MapReduceBase
- Parameters:
conf - the configuration
Copyright © 2009 The Apache Software Foundation