DefaultPreferredLocationsRetriever (Flink : Runtime 2.0.0 API)

java.lang.Object
- org.apache.flink.runtime.scheduler.DefaultPreferredLocationsRetriever

All Implemented Interfaces:

PreferredLocationsRetriever
```
public class DefaultPreferredLocationsRetriever
extends Object
implements PreferredLocationsRetriever
```
Default implementation of PreferredLocationsRetriever. Locations based on state will be returned if exist. Otherwise locations based on inputs will be returned.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CompletableFuture<Collection<TaskManagerLocation>>`	`getPreferredLocations(ExecutionVertexID executionVertexId, Set<ExecutionVertexID> producersToIgnore)`	Returns preferred locations of an execution vertex.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getPreferredLocations
```
public CompletableFuture<Collection<TaskManagerLocation>> getPreferredLocations(ExecutionVertexID executionVertexId,
                                                                                Set<ExecutionVertexID> producersToIgnore)
```
    Description copied from interface: PreferredLocationsRetriever
    
    Returns preferred locations of an execution vertex.
    
    Specified by:
    
    getPreferredLocations in interface PreferredLocationsRetriever
    
    Parameters:
    
    executionVertexId - id of the execution vertex
    
    producersToIgnore - producer vertices to ignore when calculating input locations
    
    Returns:
    
    future of preferred locations