Batch v1alpha API - Class TaskGroup (1.0.0-alpha27)

public sealed class TaskGroup : IMessage<TaskGroup>, IEquatable<TaskGroup>, IDeepCloneable<TaskGroup>, IBufferMessage, IMessage

Reference documentation and code samples for the Batch v1alpha API class TaskGroup.

A TaskGroup defines one or more Tasks that all share the same TaskSpec.

Inheritance

object > TaskGroup

Namespace

Google.Cloud.Batch.V1Alpha

Assembly

Google.Cloud.Batch.V1Alpha.dll

Constructors

TaskGroup()

public TaskGroup()

TaskGroup(TaskGroup)

public TaskGroup(TaskGroup other)
Parameter
Name Description
other TaskGroup

Properties

AllocationPolicy

public AllocationPolicy AllocationPolicy { get; set; }

Compute resource allocation for the TaskGroup. If specified, it overrides resources in Job.

Property Value
Type Description
AllocationPolicy

Labels

public MapField<string, string> Labels { get; }

Labels for the TaskGroup. Labels could be user provided or system generated. You can assign up to 64 labels. Google Compute Engine label restrictions apply. Label names that start with "goog-" or "google-" are reserved.

Property Value
Type Description
MapFieldstringstring

Name

public string Name { get; set; }

Output only. TaskGroup name. The system generates this field based on parent Job name. For example: "projects/123456/locations/us-west1/jobs/job01/taskGroups/group01".

Property Value
Type Description
string

Parallelism

public long Parallelism { get; set; }

Max number of tasks that can run in parallel. Default to min(task_count, parallel tasks per job limit). See: Job Limits. Field parallelism must be 1 if the scheduling_policy is IN_ORDER.

Property Value
Type Description
long

PermissiveSsh

public bool PermissiveSsh { get; set; }

When true, Batch will configure SSH to allow passwordless login between VMs running the Batch tasks in the same TaskGroup.

Property Value
Type Description
bool

RequireHostsFile

public bool RequireHostsFile { get; set; }

When true, Batch will populate a file with a list of all VMs assigned to the TaskGroup and set the BATCH_HOSTS_FILE environment variable to the path of that file. Defaults to false. The host file supports up to 1000 VMs.

Property Value
Type Description
bool

RunAsNonRoot

public bool RunAsNonRoot { get; set; }

Optional. If not set or set to false, Batch uses the root user to execute runnables. If set to true, Batch runs the runnables using a non-root user. Currently, the non-root user Batch used is generated by OS Login. For more information, see About OS Login.

Property Value
Type Description
bool

SchedulingPolicy

public TaskGroup.Types.SchedulingPolicy SchedulingPolicy { get; set; }

Scheduling policy for Tasks in the TaskGroup. The default value is AS_SOON_AS_POSSIBLE.

Property Value
Type Description
TaskGroupTypesSchedulingPolicy

ServiceAccount

public ServiceAccount ServiceAccount { get; set; }

Optional. ServiceAccount used by tasks within the task group for the access to other Cloud resources. This allows tasks to operate with permissions distinct from the service account for the VM set at AllocationPolicy. Use this field when tasks require different access rights than those of the VM.

Specify the service account's email field. Ensure scopes include any necessary permissions for tasks, in addition to the default 'cloud-platform' scope.

Property Value
Type Description
ServiceAccount

TaskCount

public long TaskCount { get; set; }

Number of Tasks in the TaskGroup. Default is 1.

Property Value
Type Description
long

TaskCountPerNode

public long TaskCountPerNode { get; set; }

Max number of tasks that can be run on a VM at the same time. If not specified, the system will decide a value based on available compute resources on a VM and task requirements.

Property Value
Type Description
long

TaskEnvironments

public RepeatedField<Environment> TaskEnvironments { get; }

An array of environment variable mappings, which are passed to Tasks with matching indices. If task_environments is used then task_count should not be specified in the request (and will be ignored). Task count will be the length of task_environments.

Tasks get a BATCH_TASK_INDEX and BATCH_TASK_COUNT environment variable, in addition to any environment variables set in task_environments, specifying the number of Tasks in the Task's parent TaskGroup, and the specific Task's index in the TaskGroup (0 through BATCH_TASK_COUNT - 1).

Property Value
Type Description
RepeatedFieldEnvironment

TaskGroupName

public TaskGroupName TaskGroupName { get; set; }

TaskGroupName-typed view over the Name resource name property.

Property Value
Type Description
TaskGroupName

TaskSpec

public TaskSpec TaskSpec { get; set; }

Required. Tasks in the group share the same task spec.

Property Value
Type Description
TaskSpec