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java.lang.Objectorg.apache.hadoop.mapred.MapReduceBase
org.apache.hadoop.mapred.lib.IdentityMapper<K,V>
Mapper
instead.
@Deprecated public class IdentityMapper<K,V>
Implements the identity function, mapping inputs directly to outputs.
Constructor Summary | |
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IdentityMapper()
Deprecated. |
Method Summary | |
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void |
map(K key,
V val,
OutputCollector<K,V> output,
Reporter reporter)
Deprecated. The identify function. |
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase |
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close, configure |
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.mapred.JobConfigurable |
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configure |
Methods inherited from interface java.io.Closeable |
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close |
Constructor Detail |
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public IdentityMapper()
Method Detail |
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public void map(K key, V val, OutputCollector<K,V> output, Reporter reporter) throws java.io.IOException
map
in interface Mapper<K,V,K,V>
key
- the input key.val
- the input value.output
- collects mapped keys and values.reporter
- facility to report progress.
java.io.IOException
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