org.apache.hadoop.examples

类 DBCountPageView

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.examples.DBCountPageView

所有已实现的接口:

Configurable, Tool

public class DBCountPageView
extends Configured
implements Tool

This is a demonstrative program, which uses DBInputFormat for reading the input data from a database, and DBOutputFormat for writing the data to the database.
The Program first creates the necessary tables, populates the input table and runs the mapred job.
The input data is a mini access log, with a <url,referrer,time> schema.The output is the number of pageviews of each url in the log, having the schema <url,pageview>. When called with no arguments the program starts a local HSQLDB server, and uses this database for storing/retrieving the data.

构造器概要

构造器

构造器和说明
DBCountPageView()

方法概要

方法

限定符和类型	方法和说明
static void	main(String[] args)
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

DBCountPageView

public DBCountPageView()

方法详细资料

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

main

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

抛出:

Exception