Package org.apache.spark.resource

Class ExecutorResourceRequest

Object

org.apache.spark.resource.ExecutorResourceRequest

All Implemented Interfaces:

Serializable

public class ExecutorResourceRequest
extends Object
implements Serializable

An Executor resource request. This is used in conjunction with the ResourceProfile to programmatically specify the resources needed for an RDD that will be applied at the stage level.

This is used to specify what the resource requirements are for an Executor and how Spark can find out specific details about those resources. Not all the parameters are required for every resource type. Resources like GPUs are supported and have same limitations as using the global spark configs spark.executor.resource.gpu.*. The amount, discoveryScript, and vendor parameters for resources are all the same parameters a user would specify through the configs: spark.executor.resource.{resourceName}.{amount, discoveryScript, vendor}.

For instance, a user wants to allocate an Executor with GPU resources on YARN. The user has to specify the resource name (gpu), the amount or number of GPUs per Executor, the discovery script would be specified so that when the Executor starts up it can discovery what GPU addresses are available for it to use because YARN doesn't tell Spark that, then vendor would not be used because its specific for Kubernetes.

See the configuration and cluster specific docs for more details.

Use ExecutorResourceRequests class as a convenience API.

param: resourceName Name of the resource param: amount Amount requesting param: discoveryScript Optional script used to discover the resources. This is required on some cluster managers that don't tell Spark the addresses of the resources allocated. The script runs on Executors startup to discover the addresses of the resources available. param: vendor Optional vendor, required for some cluster managers

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ExecutorResourceRequest(String resourceName, long amount, String discoveryScript, String vendor)

Method Summary

Modifier and Type	Method	Description
long	amount()
String	discoveryScript()
boolean	equals(Object obj)
int	hashCode()
String	resourceName()
String	toString()
String	vendor()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

ExecutorResourceRequest

public ExecutorResourceRequest(String resourceName,
 long amount,
 String discoveryScript,
 String vendor)

Method Details

resourceName

public String resourceName()

amount

public long amount()

discoveryScript

public String discoveryScript()

vendor

public String vendor()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object