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Packages that use Mapper | |
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org.apache.hadoop.contrib.utils.join | |
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.hbase.mapred | |
org.apache.hadoop.mapred | A system for scalable, fault-tolerant, distributed computation over large data collections. |
org.apache.hadoop.mapred.lib | Library of generally useful mappers, reducers, and partitioners. |
org.apache.hadoop.mapred.lib.aggregate | Classes for performing various counting and aggregations. |
org.apache.hadoop.streaming | |
org.apache.hadoop.tools | |
org.apache.hadoop.util | Common utilities. |
Uses of Mapper in org.apache.hadoop.contrib.utils.join |
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Classes in org.apache.hadoop.contrib.utils.join that implement Mapper | |
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class |
DataJoinMapperBase
This abstract class serves as the base class for the mapper class of a data join job. |
class |
DataJoinReducerBase
This abstract class serves as the base class for the reducer class of a data join job. |
class |
JobBase
A common base implementing some statics collecting mechanisms that are commonly used in a typical map/reduce job. |
Uses of Mapper in org.apache.hadoop.examples |
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Classes in org.apache.hadoop.examples that implement Mapper | |
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static class |
PiEstimator.PiMapper
Mappper class for Pi estimation. |
static class |
WordCount.MapClass
Counts the words in each line. |
Uses of Mapper in org.apache.hadoop.examples.dancing |
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Classes in org.apache.hadoop.examples.dancing that implement Mapper | |
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static class |
DistributedPentomino.PentMap
Each map takes a line, which represents a prefix move and finds all of the solutions that start with that prefix. |
Uses of Mapper in org.apache.hadoop.hbase.mapred |
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Classes in org.apache.hadoop.hbase.mapred that implement Mapper | |
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class |
GroupingTableMap
Extract grouping columns from input record |
class |
IdentityTableMap
Pass the given key and record as-is to reduce |
class |
TableMap
Scan an HBase table to sort by a specified sort column. |
Uses of Mapper in org.apache.hadoop.mapred |
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Methods in org.apache.hadoop.mapred that return types with arguments of type Mapper | |
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Class<? extends Mapper> |
JobConf.getMapperClass()
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Method parameters in org.apache.hadoop.mapred with type arguments of type Mapper | |
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void |
JobConf.setMapperClass(Class<? extends Mapper> theClass)
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Uses of Mapper in org.apache.hadoop.mapred.lib |
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Classes in org.apache.hadoop.mapred.lib that implement Mapper | |
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class |
FieldSelectionMapReduce
This class implements a mapper/reducer class that can be used to perform field selections in a manner similar to unix cut. |
class |
IdentityMapper
Implements the identity function, mapping inputs directly to outputs. |
class |
InverseMapper
A Mapper that swaps keys and values. |
class |
RegexMapper
A Mapper that extracts text matching a regular expression. |
class |
TokenCountMapper
A Mapper that maps text values into |
Uses of Mapper in org.apache.hadoop.mapred.lib.aggregate |
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Classes in org.apache.hadoop.mapred.lib.aggregate that implement Mapper | |
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class |
ValueAggregatorCombiner
This class implements the generic combiner of Aggregate. |
class |
ValueAggregatorJobBase
This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate. |
class |
ValueAggregatorMapper
This class implements the generic mapper of Aggregate. |
class |
ValueAggregatorReducer
This class implements the generic reducer of Aggregate. |
Uses of Mapper in org.apache.hadoop.streaming |
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Classes in org.apache.hadoop.streaming that implement Mapper | |
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class |
PipeMapper
A generic Mapper bridge. |
Uses of Mapper in org.apache.hadoop.tools |
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Classes in org.apache.hadoop.tools that implement Mapper | |
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static class |
Logalyzer.LogRegexMapper
A Mapper that extracts text matching a regular expression. |
Uses of Mapper in org.apache.hadoop.util |
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Classes in org.apache.hadoop.util that implement Mapper | |
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static class |
CopyFiles.FSCopyFilesMapper
DFSCopyFilesMapper: The mapper for copying files from the DFS. |
static class |
CopyFiles.HTTPCopyFilesMapper
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