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java.lang.Objectorg.apache.hadoop.conf.Configured
org.apache.hadoop.examples.MultiFileWordCount
public class MultiFileWordCount
MultiFileWordCount is an example to demonstrate the usage of MultiFileInputFormat. This examples counts the occurrences of words in the text files under the given input directory.
Nested Class Summary | |
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static class |
MultiFileWordCount.CombineFileLineRecordReader
RecordReader is responsible from extracting records from a chunk of the CombineFileSplit. |
static class |
MultiFileWordCount.MapClass
This Mapper is similar to the one in MultiFileWordCount.MapClass . |
static class |
MultiFileWordCount.MyInputFormat
To use CombineFileInputFormat , one should extend it, to return a
(custom) RecordReader . |
static class |
MultiFileWordCount.WordOffset
This record keeps <filename,offset> pairs. |
Constructor Summary | |
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MultiFileWordCount()
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Method Summary | |
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static void |
main(java.lang.String[] args)
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int |
run(java.lang.String[] args)
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Methods inherited from class org.apache.hadoop.conf.Configured |
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getConf, setConf |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.hadoop.conf.Configurable |
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getConf, setConf |
Constructor Detail |
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public MultiFileWordCount()
Method Detail |
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public int run(java.lang.String[] args) throws java.lang.Exception
run
in interface org.apache.hadoop.util.Tool
java.lang.Exception
public static void main(java.lang.String[] args) throws java.lang.Exception
java.lang.Exception
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