Partitioner (Flink : 2.0-SNAPSHOT API)

Type Parameters:

K - The type of the key to be partitioned.

All Superinterfaces:

Function, Serializable

All Known Implementing Classes:

IdPartitioner

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@Public
@FunctionalInterface
public interface Partitioner<K>
extends Serializable, Function
```
Function to implement a custom partition assignment for keys.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  int partition(K key, int numPartitions)
  Computes the partition for the given key.

- Method Detail
  - partition
```
int partition(K key,
              int numPartitions)
```
    Computes the partition for the given key.
    
    Parameters:
    
    key - The key.
    
    numPartitions - The number of partitions to partition into.
    
    Returns:
    
    The partition index.