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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 |
MultiFileWordCount.MapClass
This Mapper is similar to the one in MultiFileWordCount.MapClass . |
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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java.lang.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 | |
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void |
Job.setMapperClass(java.lang.Class<? extends Mapper> cls)
Set the Mapper for the job. |
Uses of Mapper in org.apache.hadoop.mapreduce.lib.fieldsel |
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Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.fieldsel | |
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class |
FieldSelectionMapper<K,V>
This class implements a mapper class that can be used to perform field selections in a manner similar to unix cut. |
Uses of Mapper in org.apache.hadoop.mapreduce.lib.input |
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Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.input | |
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class |
DelegatingMapper<K1,V1,K2,V2>
An Mapper that delegates behavior of paths to multiple other
mappers. |
Method parameters in org.apache.hadoop.mapreduce.lib.input with type arguments of type Mapper | |
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static void |
MultipleInputs.addInputPath(Job job,
org.apache.hadoop.fs.Path path,
java.lang.Class<? extends InputFormat> inputFormatClass,
java.lang.Class<? extends Mapper> mapperClass)
Add a Path with a custom InputFormat and
Mapper to the list of inputs for the map-reduce 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 |
RegexMapper<K>
A Mapper that extracts text matching a regular expression. |
class |
TokenCounterMapper
Tokenize the input values and emit each word with a count of 1. |
class |
WrappedMapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
A Mapper which wraps a given one to allow custom
WrappedMapper.Context implementations. |
Methods in org.apache.hadoop.mapreduce.lib.map that return types with arguments of type Mapper | ||
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java.lang.Class<? extends Mapper<?,?,?,?>> |
WrappedMapper.Context.getMapperClass()
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static
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MultithreadedMapper.getMapperClass(JobContext job)
Get the application's mapper class. |
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,
java.lang.Class<? extends Mapper<K1,V1,K2,V2>> cls)
Set the application's mapper class. |
Uses of Mapper in org.apache.hadoop.mapreduce.lib.reduce |
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Methods in org.apache.hadoop.mapreduce.lib.reduce that return types with arguments of type Mapper | |
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java.lang.Class<? extends Mapper<?,?,?,?>> |
WrappedReducer.Context.getMapperClass()
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Uses of Mapper in org.apache.hadoop.mapreduce.task |
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Methods in org.apache.hadoop.mapreduce.task that return types with arguments of type Mapper | |
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java.lang.Class<? extends Mapper<?,?,?,?>> |
JobContextImpl.getMapperClass()
Get the Mapper class for the job. |
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