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Packages that use MapReduceBase | |
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org.apache.hadoop.benchmarks.mapred | |
org.apache.hadoop.examples | Hadoop example code. |
org.apache.hadoop.mapred.lib | Library of generally useful mappers, reducers, and partitioners. |
org.apache.hadoop.tools | |
org.apache.hadoop.util | Common utilities. |
Uses of MapReduceBase in org.apache.hadoop.benchmarks.mapred |
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Subclasses of MapReduceBase in org.apache.hadoop.benchmarks.mapred | |
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class |
BenchmarkMapper
takes inpt format as text lines, runs some processing on it and writes out data as text again. |
class |
BenchmarkReducer
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Uses of MapReduceBase in org.apache.hadoop.examples |
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Subclasses of MapReduceBase in org.apache.hadoop.examples | |
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static class |
PiEstimator.PiMapper
Mappper class for Pi estimation. |
static class |
PiEstimator.PiReducer
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class |
RandomWriter
This program uses map/reduce to just run a distributed job where there is no interaction between the tasks and each task write a large unsorted random binary sequence file of BytesWritable. |
static class |
RandomWriter.Map
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static class |
WordCount.MapClass
Counts the words in each line. |
static class |
WordCount.Reduce
A reducer class that just emits the sum of the input values. |
Uses of MapReduceBase in org.apache.hadoop.mapred.lib |
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Subclasses of MapReduceBase in org.apache.hadoop.mapred.lib | |
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class |
IdentityMapper
Implements the identity function, mapping inputs directly to outputs. |
class |
IdentityReducer
Performs no reduction, writing all input values directly to the output. |
class |
InverseMapper
A Mapper that swaps keys and values. |
class |
LongSumReducer
A Reducer that sums long values. |
class |
RegexMapper
A Mapper that extracts text matching a regular expression. |
class |
TokenCountMapper
A Mapper that maps text values into |
Uses of MapReduceBase in org.apache.hadoop.tools |
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Subclasses of MapReduceBase in org.apache.hadoop.tools | |
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static class |
Logalyzer.LogRegexMapper
A Mapper that extracts text matching a regular expression. |
Uses of MapReduceBase in org.apache.hadoop.util |
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Subclasses of MapReduceBase in org.apache.hadoop.util | |
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static class |
CopyFiles.CopyFilesMapper
Base-class for all mappers for distcp |
static class |
CopyFiles.CopyFilesReducer
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static class |
CopyFiles.DFSCopyFilesMapper
DFSCopyFilesMapper: The mapper for copying files from the DFS. |
static class |
CopyFiles.HTTPCopyFilesMapper
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