Package io.ray.api

Class PlacementGroups

java.lang.Object

io.ray.api.PlacementGroups

public class PlacementGroups
extends Object

This class contains all public APIs of Placement Group.

Constructor Summary

Constructors

Constructor	Description
PlacementGroups()

Method Summary

Modifier and Type	Method	Description
static PlacementGroup	createPlacementGroup(PlacementGroupCreationOptions creationOptions)	Create a placement group.
static List<PlacementGroup>	getAllPlacementGroups()	Get all placement groups in this cluster.
static PlacementGroup	getGlobalPlacementGroup(String name)	Get a placement group by placement group name from all jobs.
static PlacementGroup	getPlacementGroup(PlacementGroupId id)	Get a placement group by placement group Id.
static PlacementGroup	getPlacementGroup(String name)	Get a placement group by placement group name from current job.
static void	removePlacementGroup(PlacementGroupId id)	Remove a placement group by id.

Methods inherited from class java.lang.Object

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

Constructor Details

PlacementGroups

public PlacementGroups()

Method Details

createPlacementGroup

public static PlacementGroup createPlacementGroup(PlacementGroupCreationOptions creationOptions)

Create a placement group. A placement group is used to place actors according to a specific strategy and resource constraints. It will sends a request to GCS to preallocate the specified resources, which is asynchronous. If the specified resource cannot be allocated, it will wait for the resource to be updated and rescheduled.

Parameters:

creationOptions - Creation options of the placement group.

Returns:

A handle to the created placement group.

getPlacementGroup

public static PlacementGroup getPlacementGroup(PlacementGroupId id)

Get a placement group by placement group Id.

Parameters:

id - placement group id.

Returns:

The placement group.

getPlacementGroup

public static PlacementGroup getPlacementGroup(String name)

Get a placement group by placement group name from current job.

Parameters:

name - The placement group name.

Returns:

The placement group.

getGlobalPlacementGroup

public static PlacementGroup getGlobalPlacementGroup(String name)

Get a placement group by placement group name from all jobs.

Parameters:

name - The placement group name.

Returns:

The placement group.

getAllPlacementGroups

public static List<PlacementGroup> getAllPlacementGroups()

Get all placement groups in this cluster.

Returns:

All placement groups.

removePlacementGroup

public static void removePlacementGroup(PlacementGroupId id)

Remove a placement group by id. Throw RayException if remove failed.

Parameters:

id - Id of the placement group.