public abstract class SharingMapper<K1,V1,K2,V2,S>
Mapper class to be used by MultithreadedSharingMapper. Offers "global" before() and after() methods
that will typically be used to set up static variables.
Suitable for mappers that need large, read-only in-memory data to operate.
Nested Class Summary
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper