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Packages that use Mapper.Context | |
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org.apache.hadoop.examples | Hadoop example code. |
org.apache.hadoop.examples.dancing | This package is a distributed implementation of Knuth's dancing links algorithm that can run under Hadoop. |
org.apache.hadoop.examples.pi | This package consists of a map/reduce application, distbbp, which computes exact binary digits of the mathematical constant π. |
org.apache.hadoop.examples.terasort | This package consists of 3 map/reduce applications for Hadoop to compete in the annual terabyte sort competition. |
org.apache.hadoop.mapreduce | |
org.apache.hadoop.mapreduce.lib.aggregate | Classes for performing various counting and aggregations. |
org.apache.hadoop.mapreduce.lib.chain | |
org.apache.hadoop.mapreduce.lib.fieldsel | |
org.apache.hadoop.mapreduce.lib.map |
Uses of Mapper.Context in org.apache.hadoop.examples |
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Methods in org.apache.hadoop.examples with parameters of type Mapper.Context | |
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protected void |
BaileyBorweinPlouffe.BbpMapper.map(org.apache.hadoop.io.LongWritable offset,
org.apache.hadoop.io.IntWritable length,
Mapper.Context context)
Compute the (offset+1)th to (offset+length)th digits. |
void |
QuasiMonteCarlo.QmcMapper.map(org.apache.hadoop.io.LongWritable offset,
org.apache.hadoop.io.LongWritable size,
Mapper.Context context)
Map method. |
void |
SecondarySort.MapClass.map(org.apache.hadoop.io.LongWritable inKey,
org.apache.hadoop.io.Text inValue,
Mapper.Context context)
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void |
MultiFileWordCount.MapClass.map(MultiFileWordCount.WordOffset key,
org.apache.hadoop.io.Text value,
Mapper.Context context)
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void |
WordCount.TokenizerMapper.map(Object key,
org.apache.hadoop.io.Text value,
Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.examples.dancing |
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Methods in org.apache.hadoop.examples.dancing with parameters of type Mapper.Context | |
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void |
DistributedPentomino.PentMap.map(org.apache.hadoop.io.WritableComparable<?> key,
org.apache.hadoop.io.Text value,
Mapper.Context context)
Break the prefix string into moves (a sequence of integer row ids that will be selected for each column in order). |
void |
DistributedPentomino.PentMap.setup(Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.examples.pi |
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Methods in org.apache.hadoop.examples.pi with parameters of type Mapper.Context | |
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protected void |
DistSum.ReduceSide.PartitionMapper.map(org.apache.hadoop.io.NullWritable nw,
SummationWritable sigma,
Mapper.Context context)
Partitions sigma into parts |
protected void |
DistSum.MapSide.SummingMapper.map(org.apache.hadoop.io.NullWritable nw,
SummationWritable sigma,
Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.examples.terasort |
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Methods in org.apache.hadoop.examples.terasort with parameters of type Mapper.Context | |
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void |
TeraGen.SortGenMapper.cleanup(Mapper.Context context)
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void |
TeraGen.SortGenMapper.map(org.apache.hadoop.io.LongWritable row,
org.apache.hadoop.io.NullWritable ignored,
Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.mapreduce |
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Methods in org.apache.hadoop.mapreduce with parameters of type Mapper.Context | |
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protected void |
Mapper.cleanup(Mapper.Context context)
Called once at the end of the task. |
protected void |
Mapper.map(KEYIN key,
VALUEIN value,
Mapper.Context context)
Called once for each key/value pair in the input split. |
void |
Mapper.run(Mapper.Context context)
Expert users can override this method for more complete control over the execution of the Mapper. |
protected void |
Mapper.setup(Mapper.Context context)
Called once at the beginning of the task. |
Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.aggregate |
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Methods in org.apache.hadoop.mapreduce.lib.aggregate with parameters of type Mapper.Context | |
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void |
ValueAggregatorMapper.map(K1 key,
V1 value,
Mapper.Context context)
the map function. |
void |
ValueAggregatorMapper.setup(Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.chain |
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Methods in org.apache.hadoop.mapreduce.lib.chain with parameters of type Mapper.Context | |
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void |
ChainMapper.run(Mapper.Context context)
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protected void |
ChainMapper.setup(Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.fieldsel |
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Methods in org.apache.hadoop.mapreduce.lib.fieldsel with parameters of type Mapper.Context | |
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void |
FieldSelectionMapper.map(K key,
V val,
Mapper.Context context)
The identify function. |
void |
FieldSelectionMapper.setup(Mapper.Context context)
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Uses of Mapper.Context in org.apache.hadoop.mapreduce.lib.map |
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Subclasses of Mapper.Context in org.apache.hadoop.mapreduce.lib.map | |
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class |
WrappedMapper.Context
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Methods in org.apache.hadoop.mapreduce.lib.map that return Mapper.Context | |
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Mapper.Context |
WrappedMapper.getMapContext(MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> mapContext)
Get a wrapped WrappedMapper.Context for custom implementations. |
Methods in org.apache.hadoop.mapreduce.lib.map with parameters of type Mapper.Context | |
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void |
RegexMapper.map(K key,
org.apache.hadoop.io.Text value,
Mapper.Context context)
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void |
InverseMapper.map(K key,
V value,
Mapper.Context context)
The inverse function. |
void |
TokenCounterMapper.map(Object key,
org.apache.hadoop.io.Text value,
Mapper.Context context)
|
void |
MultithreadedMapper.run(Mapper.Context context)
Run the application's maps using a thread pool. |
void |
RegexMapper.setup(Mapper.Context context)
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