org.apache.hadoop.examples.dancing

类 DistributedPentomino

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.examples.dancing.DistributedPentomino

所有已实现的接口:

Configurable, Tool

public class DistributedPentomino
extends Configured
implements Tool

Launch a distributed pentomino solver. It generates a complete list of prefixes of length N with each unique prefix as a separate line. A prefix is a sequence of N integers that denote the index of the row that is choosen for each column in order. Note that the next column is heuristically choosen by the solver, so it is dependant on the previous choice. That file is given as the input to map/reduce. The output key/value are the move prefix/solution as Text/Text.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	DistributedPentomino.PentMap Each map takes a line, which represents a prefix move and finds all of the solutions that start with that prefix.

构造器概要

构造器

构造器和说明
DistributedPentomino()

方法概要

方法

限定符和类型	方法和说明
static void	main(String[] args) Launch the solver on 9x10 board and the one sided pentominos.
int	run(String[] args) Execute the command with the given arguments.

从类继承的方法 org.apache.hadoop.conf.Configured

getConf, setConf

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.conf.Configurable

getConf, setConf

构造器详细资料

DistributedPentomino

public DistributedPentomino()

方法详细资料

main

public static void main(String[] args)
                 throws Exception

Launch the solver on 9x10 board and the one sided pentominos. This takes about 2.5 hours on 20 nodes with 2 cpus/node. Splits the job into 2000 maps and 1 reduce.

抛出:

Exception

run

public int run(String[] args)
        throws Exception

从接口复制的说明: Tool

Execute the command with the given arguments.

指定者:

run 在接口中 Tool

参数:

args - command specific arguments.

返回:

exit code.

抛出:

Exception