@InterfaceAudience.Public @InterfaceStability.Stable public class FieldSelectionMapper<K,V> extends Mapper<K,V,Text,Text>
| Modifier and Type | Field and Description | 
|---|---|
| static org.slf4j.Logger | LOG | 
| Constructor and Description | 
|---|
| FieldSelectionMapper() | 
| Modifier and Type | Method and Description | 
|---|---|
| void | map(K key,
   V val,
   org.apache.hadoop.mapreduce.Mapper.Context context)The identify function. | 
| void | setup(org.apache.hadoop.mapreduce.Mapper.Context context)Called once at the beginning of the task. | 
public void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
           throws IOException,
                  InterruptedException
Mappersetup in class Mapper<K,V,Text,Text>IOExceptionInterruptedExceptionpublic void map(K key, V val, org.apache.hadoop.mapreduce.Mapper.Context context) throws IOException, InterruptedException
map in class Mapper<K,V,Text,Text>IOExceptionInterruptedExceptionCopyright © 2023 Apache Software Foundation. All rights reserved.