Package org.apache.hadoop.hbase.mapreduce

Class RowCounter.RowCounterMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<ImmutableBytesWritable,Result,KEYOUT,VALUEOUT>

org.apache.hadoop.hbase.mapreduce.TableMapper<ImmutableBytesWritable,Result>

org.apache.hadoop.hbase.mapreduce.RowCounter.RowCounterMapper

Enclosing class:

RowCounter

static class RowCounter.RowCounterMapper
extends TableMapper<ImmutableBytesWritable,Result>

Mapper that runs the count.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	RowCounter.RowCounterMapper.Counters	Counter enumeration to count the actual rows.

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor	Description
RowCounterMapper()

Method Summary

Modifier and Type	Method	Description
void	map(ImmutableBytesWritable row, Result values, org.apache.hadoop.mapreduce.Mapper<ImmutableBytesWritable,Result,ImmutableBytesWritable,Result>.org.apache.hadoop.mapreduce.Mapper.Context context)	Maps the data.

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Details

RowCounterMapper

RowCounterMapper()

Method Details

map

public void map(ImmutableBytesWritable row,
 Result values,
 org.apache.hadoop.mapreduce.Mapper<ImmutableBytesWritable,Result,ImmutableBytesWritable,Result>.org.apache.hadoop.mapreduce.Mapper.Context context)
         throws IOException

Maps the data.

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<ImmutableBytesWritable,Result,ImmutableBytesWritable,Result>

Parameters:

row - The current table row key.

values - The columns.

context - The current context.

Throws:

IOException - When something is broken with the data.

See Also:

• org.apache.hadoop.mapreduce.Mapper#map(Object, Object, Context)