org.apache.hadoop.hbase.mapred

Class RowCounter

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.mapred.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 map to count rows. Map outputs table rows IF the input row has columns that have content. Uses a org.apache.hadoop.mapred.lib.IdentityReducer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	RowCounter.RowCounterMapper Mapper that runs the count.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static String	NAME

Constructor Summary

Constructors

Constructor and Description
RowCounter()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapred.JobConf	createSubmittableJob(String[] args) n * @return the JobConf n
static void	main(String[] args) nn
(package private) static int	printUsage()
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

Field Detail

NAME

static final String NAME

See Also:

Constant Field Values

Constructor Detail

RowCounter

public RowCounter()

Method Detail

createSubmittableJob

public org.apache.hadoop.mapred.JobConf createSubmittableJob(String[] args)
                                                      throws IOException

n * @return the JobConf n

Throws:

IOException

printUsage

static int printUsage()

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

nn

Throws:

Exception