org.apache.hadoop.hbase.mapreduce

Class RowCounter

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.mapreduce.RowCounter

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

@InterfaceAudience.Public
public class RowCounter
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

A job with a just a map phase to count rows. Map outputs table rows IF the input row has columns that have content.

Constructor Summary

Constructors

Constructor and Description
RowCounter()

Method Summary

Modifier and Type	Method and Description
static org.apache.hadoop.mapreduce.Job	createSubmittableJob(org.apache.hadoop.conf.Configuration conf, String[] args) Sets up the actual job.
static void	main(String[] args) Main entry point.
int	run(String[] args)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

RowCounter

public RowCounter()

Method Detail

createSubmittableJob

public static org.apache.hadoop.mapreduce.Job createSubmittableJob(org.apache.hadoop.conf.Configuration conf,
                                                                   String[] args)
                                                            throws IOException

Sets up the actual job.

Parameters:

conf - The current configuration.

args - The command line parameters.

Returns:

The newly created job.

Throws:

IOException - When setting up the job fails.

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

Exception

main

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

Main entry point.

Parameters:

args - The command line parameters.

Throws:

Exception - When running the job fails.