```
public class CoLocationConstraint
extends Object
```
A CoLocationConstraint stores the ID of CoLocationGroup and an ID referring to the actual subtask (i.e. ExecutionVertex). In co-location groups, the different subtasks of different JobVertex instances need to be executed on the same slot. This is realized by creating a special shared slot that holds these tasks.

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`
`int`	`hashCode()`

Class CoLocationConstraint