程序包 org.apache.hadoop.mapreduce.lib.fieldsel

类概要

类	说明
FieldSelectionHelper	This class implements a mapper/reducer class that can be used to perform field selections in a manner similar to unix cut.
FieldSelectionMapper<K,V>	This class implements a mapper class that can be used to perform field selections in a manner similar to unix cut.
FieldSelectionReducer<K,V>	This class implements a reducer class that can be used to perform field selections in a manner similar to unix cut.