K1
- V1
- K2
- V2
- public abstract class SharingMapper<K1,V1,K2,V2,S>
extends org.apache.hadoop.mapreduce.Mapper<K1,V1,K2,V2>
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.Constructor and Description |
---|
SharingMapper() |
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