org.apache.storm.grouping

Interface PartialKeyGrouping.AssignmentCreator

All Superinterfaces:

Serializable

All Known Implementing Classes:

PartialKeyGrouping.RandomTwoTaskAssignmentCreator

Enclosing class:

PartialKeyGrouping

public static interface PartialKeyGrouping.AssignmentCreator
extends Serializable

This interface is responsible for choosing a subset of the target tasks to use for a given key.

NOTE: whatever scheme you use to create the assignment should be deterministic. This may be executed on multiple Storm Workers, thus each of them needs to come up with the same assignment for a given key.

Method Summary

Modifier and Type	Method and Description
int[]	createAssignment(List<Integer> targetTasks, byte[] key)

Method Detail

createAssignment

int[] createAssignment(List<Integer> targetTasks,
                       byte[] key)