RowCounter (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.mapreduce.RowCounter

```
@InterfaceAudience.Public
@InterfaceStability.Stable
public class RowCounter
extends Object
```
A job with a just a map phase to count rows. Map outputs table rows IF the input row has columns that have content.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

(package private) static class RowCounter.RowCounterMapper
Mapper that runs the count.

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
Name of this 'program'.

Fields
Modifier and Type	Field and Description
`(package private) static String`	`NAME` Name of this 'program'.

Constructor Summary

Constructors
Constructor and Description

RowCounter()

Constructors
Constructor and Description
`RowCounter()`

Method Summary

Methods
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.
`private static void`	`printUsage()`
`private static void`	`printUsage(String errorMessage)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- NAME
```
static final String NAME
```
  Name of this 'program'.
  
  See Also:
  Constant Field Values

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.

printUsage

private static void printUsage(String errorMessage)

printUsage
```
private static void printUsage()
```

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.

Class RowCounter

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NAME

Constructor Detail

RowCounter

Method Detail

createSubmittableJob

printUsage

printUsage

main