Partitioner (Nemo Project 0.4 API)

Type Parameters:

K - the key type of the partition to write.

All Known Implementing Classes:

DedicatedKeyPerElementPartitioner, HashPartitioner, IntactPartitioner
```
public interface Partitioner<K extends java.io.Serializable>
```
This interface represents the way of partitioning output data from a source task. It takes an element and designates key of partition to write the element, according to the number of destination tasks, the key of each element, etc.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static Partitioner`	`getPartitioner(ExecutionPropertyMap<EdgeExecutionProperty> edgeProperties, ExecutionPropertyMap<VertexExecutionProperty> dstProperties)`
`K`	`partition(java.lang.Object element)`	Divides the output data from a task into multiple blocks.

- Method Detail
  - partition
```
K partition(java.lang.Object element)
```
    Divides the output data from a task into multiple blocks.
    
    Parameters:
    
    element - the output element from a source task.
    
    Returns:
    
    the key of the partition in the block to write the element.
  - getPartitioner
```
static Partitioner getPartitioner(ExecutionPropertyMap<EdgeExecutionProperty> edgeProperties,
                                  ExecutionPropertyMap<VertexExecutionProperty> dstProperties)
```
    Parameters:
    
    edgeProperties - edge properties.
    
    dstProperties - vertex properties.
    
    Returns:
    
    the partitioner.