cascading.tuple
Interface Hasher<V>

All Known Implementing Classes:

BytesComparator

public interface Hasher<V>

The Hasher allows a Comparator implementation to also be delegated to during hashCode generation during grouping partitioning.

If a Comparator is used to compare two types during grouping, its likely the hashCode value between the two objects will not be consistent. This allows to objects being equal to hash to the same bucket (reducer) during partitioning.

Method Summary

int	hashCode(V value) Return the hashCode of the given value.

Method Detail

hashCode

int hashCode(V value)

Return the hashCode of the given value.

Parameters:

value - will never be null

Returns:

int hashCode of given value