org.apache.beam.sdk.transforms.resourcehints

Class ResourceHints

java.lang.Object

org.apache.beam.sdk.transforms.resourcehints.ResourceHints

public class ResourceHints
extends java.lang.Object

Pipeline authors can use resource hints to provide additional information to runners about the desired aspects of the execution environment. Resource hints can be specified via PTransform#setResourceHints for parts of the pipeline, or globally via resourceHints pipeline option.

Interpretation of hints is provided by Beam runners.

Method Summary

Modifier and Type	Method and Description
static ResourceHints	create() Creates a ResourceHints instance with no hints.
boolean	equals(@Nullable java.lang.Object other)
static ResourceHints	fromOptions(PipelineOptions options) Creates a ResourceHints instance with hints supplied in options.
int	hashCode()
java.util.Map<java.lang.String,ResourceHint>	hints()
ResourceHints	mergeWithOuter(ResourceHints outer)
ResourceHints	withAccelerator(java.lang.String accelerator) Declares hardware accelerators that are desired to have in the execution environment.
ResourceHints	withHint(java.lang.String urn, ResourceHint hint) Declares a custom resource hint that has a specified URN.
ResourceHints	withMinRam(long ramBytes) Sets desired minimal available RAM size to have in transform's execution environment.
ResourceHints	withMinRam(java.lang.String ramBytes) Sets desired minimal available RAM size to have in transform's execution environment.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static ResourceHints create()

Creates a ResourceHints instance with no hints.

fromOptions

public static ResourceHints fromOptions(PipelineOptions options)

Creates a ResourceHints instance with hints supplied in options.

withMinRam

public ResourceHints withMinRam(long ramBytes)

Sets desired minimal available RAM size to have in transform's execution environment.

Parameters:

ramBytes - specifies a positive RAM size in bytes. A number greater than 2G (Integer.MAX_VALUE) is typical.

withMinRam

public ResourceHints withMinRam(java.lang.String ramBytes)

Sets desired minimal available RAM size to have in transform's execution environment.

Parameters:

ramBytes - specifies a human-friendly size string, for example: '10.5 GiB', '4096 MiB', etc.

withAccelerator

public ResourceHints withAccelerator(java.lang.String accelerator)

Declares hardware accelerators that are desired to have in the execution environment.

withHint

public ResourceHints withHint(java.lang.String urn,
                              ResourceHint hint)

Declares a custom resource hint that has a specified URN.

hints

public java.util.Map<java.lang.String,ResourceHint> hints()

mergeWithOuter

public ResourceHints mergeWithOuter(ResourceHints outer)

equals

public boolean equals(@Nullable java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object