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java.lang.Objectorg.apache.hadoop.conf.Configured
org.apache.hadoop.examples.terasort.TeraGen
public class TeraGen
Generate the official terasort input data set. The user specifies the number of rows and the output directory and this class runs a map/reduce program to generate the data. The format of the data is:
To run the program: bin/hadoop jar hadoop-*-examples.jar teragen 10000000000 in-dir
Nested Class Summary | |
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static class |
TeraGen.SortGenMapper
The Mapper class that given a row number, will generate the appropriate output line. |
Constructor Summary | |
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TeraGen()
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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)
Execute the command with the given arguments. |
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 TeraGen()
Method Detail |
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public int run(java.lang.String[] args) throws java.io.IOException
Tool
run
in interface Tool
args
- the cli arguments
java.io.IOException
public static void main(java.lang.String[] args) throws java.lang.Exception
java.lang.Exception
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