io.ray.streaming.api.partition.impl

Class KeyPartition<K,T>

java.lang.Object

io.ray.streaming.api.partition.impl.KeyPartition<K,T>

Type Parameters:

K - Type of the partition key.

T - Type of the input record.

All Implemented Interfaces:

Function, Partition<KeyRecord<K,T>>, Serializable

public class KeyPartition<K,T>
extends Object
implements Partition<KeyRecord<K,T>>

Partition the record by the key.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
KeyPartition()

Method Summary

Modifier and Type	Method and Description
int[]	partition(KeyRecord<K,T> keyRecord, int numPartition) Given a record and downstream partitions, determine which partition(s) should receive the record.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.ray.streaming.api.function.Function

loadCheckpoint, saveCheckpoint

Constructor Detail

KeyPartition

public KeyPartition()

Method Detail

partition

public int[] partition(KeyRecord<K,T> keyRecord,
                       int numPartition)

Description copied from interface: Partition

Given a record and downstream partitions, determine which partition(s) should receive the record.

Specified by:

partition in interface Partition<KeyRecord<K,T>>

Parameters:

keyRecord - The record.

numPartition - num of partitions

Returns:

IDs of the downstream partitions that should receive the record.