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| Packages that use Mapper | |
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| org.apache.hadoop.examples | Hadoop example code. |
| org.apache.hadoop.mapreduce | |
| org.apache.hadoop.mapreduce.lib.map | |
| Uses of Mapper in org.apache.hadoop.examples |
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| Subclasses of Mapper in org.apache.hadoop.examples | |
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static class |
SecondarySort.MapClass
Read two integers from each line and generate a key, value pair as ((left, right), right). |
static class |
WordCount.TokenizerMapper
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| Uses of Mapper in org.apache.hadoop.mapreduce |
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| Methods in org.apache.hadoop.mapreduce that return types with arguments of type Mapper | |
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Class<? extends Mapper<?,?,?,?>> |
JobContext.getMapperClass()
Get the Mapper class for the job. |
| Method parameters in org.apache.hadoop.mapreduce with type arguments of type Mapper | |
|---|---|
void |
Job.setMapperClass(Class<? extends Mapper> cls)
Set the Mapper for the job. |
| Uses of Mapper in org.apache.hadoop.mapreduce.lib.map |
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| Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.map | |
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class |
InverseMapper<K,V>
A Mapper that swaps keys and values. |
class |
MultithreadedMapper<K1,V1,K2,V2>
Multithreaded implementation for @link org.apache.hadoop.mapreduce.Mapper. |
class |
TokenCounterMapper
Tokenize the input values and emit each word with a count of 1. |
| Methods in org.apache.hadoop.mapreduce.lib.map that return types with arguments of type Mapper | ||
|---|---|---|
static
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MultithreadedMapper.getMapperClass(JobContext job)
Get the application's mapper class. |
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| Method parameters in org.apache.hadoop.mapreduce.lib.map with type arguments of type Mapper | ||
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static
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MultithreadedMapper.setMapperClass(Job job,
Class<? extends Mapper<K1,V1,K2,V2>> cls)
Set the application's mapper class. |
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