Tasks - Get Task

Service:

Batch Service

API Version:

2025-06-01

Gets information about the specified Task.
For multi-instance Tasks, information such as affinityId, executionInfo and nodeInfo refer to the primary Task. Use the list subtasks API to retrieve information about subtasks.

GET {endpoint}/jobs/{jobId}/tasks/{taskId}?api-version=2025-06-01

With optional parameters:

GET {endpoint}/jobs/{jobId}/tasks/{taskId}?api-version=2025-06-01&timeOut={timeOut}&$select={$select}&$expand={$expand}

URI Parameters

Name	In	Required	Type	Description
endpoint	path	True	string (uri)	Batch account endpoint (for example: https://batchaccount.eastus2.batch.azure.com).
jobId	path	True	string	The ID of the Job that contains the Task.
taskId	path	True	string	The ID of the Task to get information about.
api-version	query	True	string minLength: 1	The API version to use for this operation.
$expand	query		string[]	An OData $expand clause.
$select	query		string[]	An OData $select clause.
timeOut	query		integer (int32)	The maximum time that the server can spend processing the request, in seconds. The default is 30 seconds. If the value is larger than 30, the default will be used instead.".

Request Header

Name	Required	Type	Description
client-request-id		string	The caller-generated request identity, in the form of a GUID with no decoration such as curly braces, e.g. 9C4D50EE-2D56-4CD3-8152-34347DC9F2B0.
return-client-request-id		boolean	Whether the server should return the client-request-id in the response.
ocp-date		string (date-time-rfc7231)	The time the request was issued. Client libraries typically set this to the current system clock time; set it explicitly if you are calling the REST API directly.
If-Modified-Since		string (date-time-rfc7231)	A timestamp indicating the last modified time of the resource known to the client. The operation will be performed only if the resource on the service has been modified since the specified time.
If-Unmodified-Since		string (date-time-rfc7231)	A timestamp indicating the last modified time of the resource known to the client. The operation will be performed only if the resource on the service has not been modified since the specified time.
If-Match		string	An ETag value associated with the version of the resource known to the client. The operation will be performed only if the resource's current ETag on the service exactly matches the value specified by the client.
If-None-Match		string	An ETag value associated with the version of the resource known to the client. The operation will be performed only if the resource's current ETag on the service does not match the value specified by the client.

Responses

Name	Type	Description
200 OK	BatchTask	The request has succeeded. Headers DataServiceId: string ETag: string Last-Modified: string client-request-id: string request-id: string
Other Status Codes	BatchError	An unexpected error response.

Security

OAuth2Auth

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/v2.0/authorize

Scopes

Name	Description
https://batch.core.windows.net//.default

Examples

Task get

Sample request

HTTP

GET {endpoint}/jobs/jobId/tasks/taskId?api-version=2025-06-01

Sample response

Status code:

200

{
  "id": "testTask",
  "url": "https://account.region.batch.azure.com/jobs/jobId/tasks/taskId",
  "eTag": "0x8D3D62350711C55",
  "creationTime": "2025-09-06T06:59:15.1161429Z",
  "lastModified": "2025-09-06T06:59:15.1161429Z",
  "state": "active",
  "stateTransitionTime": "2025-09-06T06:59:15.1161429Z",
  "commandLine": "cmd /c hostname",
  "userIdentity": {
    "autoUser": {
      "scope": "task",
      "elevationLevel": "nonadmin"
    }
  },
  "multiInstanceSettings": {
    "numberOfInstances": 3,
    "coordinationCommandLine": "cmd /c echo coordinating"
  },
  "constraints": {
    "maxWallClockTime": "P10675199DT2H48M5.4775807S",
    "retentionTime": "P10675199DT2H48M5.4775807S",
    "maxTaskRetryCount": 0
  },
  "requiredSlots": 2,
  "executionInfo": {
    "retryCount": 0,
    "requeueCount": 0
  }
}

Definitions

Name	Description
AuthenticationTokenSettings	The settings for an authentication token that the Task can use to perform Batch service operations.
AutoUserScope	AutoUserScope enums
AutoUserSpecification	Specifies the options for the auto user that runs an Azure Batch Task.
BatchAccessScope	BatchAccessScope enums
BatchAffinityInfo	A locality hint that can be used by the Batch service to select a Compute Node on which to start a Task.
BatchApplicationPackageReference	A reference to an Package to be deployed to Compute Nodes.
BatchError	An error response received from the Azure Batch service.
BatchErrorDetail	An item of additional information included in an Azure Batch error response.
BatchErrorMessage	An error message received in an Azure Batch error response.
BatchErrorSourceCategory	BatchErrorSourceCategory enums
BatchJobActionKind	BatchJobAction enums
BatchNodeIdentityReference	The reference to a user assigned identity associated with the Batch pool which a compute node will use.
BatchNodeInfo	Information about the Compute Node on which a Task ran.
BatchTask	Batch will retry Tasks when a recovery operation is triggered on a Node. Examples of recovery operations include (but are not limited to) when an unhealthy Node is rebooted or a Compute Node disappeared due to host failure. Retries due to recovery operations are independent of and are not counted against the maxTaskRetryCount. Even if the maxTaskRetryCount is 0, an internal retry due to a recovery operation may occur. Because of this, all Tasks should be idempotent. This means Tasks need to tolerate being interrupted and restarted without causing any corruption or duplicate data. The best practice for long running Tasks is to use some form of checkpointing.
BatchTaskConstraints	Execution constraints to apply to a Task.
BatchTaskContainerExecutionInfo	Contains information about the container which a Task is executing.
BatchTaskContainerSettings	The container settings for a Task.
BatchTaskDependencies	Specifies any dependencies of a Task. Any Task that is explicitly specified or within a dependency range must complete before the dependant Task will be scheduled.
BatchTaskExecutionInfo	Information about the execution of a Task.
BatchTaskExecutionResult	BatchTaskExecutionResult enums
BatchTaskFailureInfo	Information about a Task failure.
BatchTaskIdRange	The start and end of the range are inclusive. For example, if a range has start 9 and end 12, then it represents Tasks '9', '10', '11' and '12'.
BatchTaskState	BatchTaskState enums
BatchTaskStatistics	Resource usage statistics for a Task.
ContainerHostBatchBindMountEntry	The entry of path and mount mode you want to mount into task container.
ContainerHostDataPath	The paths which will be mounted to container task's container.
ContainerRegistryReference	A private container registry.
ContainerWorkingDirectory	ContainerWorkingDirectory enums
DependencyAction	DependencyAction enums
ElevationLevel	ElevationLevel enums
EnvironmentSetting	An environment variable to be set on a Task process.
ExitCodeMapping	How the Batch service should respond if a Task exits with a particular exit code.
ExitCodeRangeMapping	A range of exit codes and how the Batch service should respond to exit codes within that range.
ExitConditions	Specifies how the Batch service should respond when the Task completes.
ExitOptions	Specifies how the Batch service responds to a particular exit condition.
MultiInstanceSettings	Multi-instance Tasks are commonly used to support MPI Tasks. In the MPI case, if any of the subtasks fail (for example due to exiting with a non-zero exit code) the entire multi-instance Task fails. The multi-instance Task is then terminated and retried, up to its retry limit.
NameValuePair	Represents a name-value pair.
OutputFile	On every file uploads, Batch service writes two log files to the compute node, 'fileuploadout.txt' and 'fileuploaderr.txt'. These log files are used to learn more about a specific failure.
OutputFileBlobContainerDestination	Specifies a file upload destination within an Azure blob storage container.
OutputFileDestination	The destination to which a file should be uploaded.
OutputFileUploadCondition	OutputFileUploadCondition enums
OutputFileUploadConfig	Options for an output file upload operation, including under what conditions to perform the upload.
OutputFileUploadHeader	An HTTP header name-value pair
ResourceFile	A single file or multiple files to be downloaded to a Compute Node.
UserIdentity	The definition of the user identity under which the Task is run. Specify either the userName or autoUser property, but not both.

AuthenticationTokenSettings

Object

The settings for an authentication token that the Task can use to perform Batch service operations.

Name	Type	Description
access	BatchAccessScope[]	The Batch resources to which the token grants access. The authentication token grants access to a limited set of Batch service operations. Currently the only supported value for the access property is 'job', which grants access to all operations related to the Job which contains the Task.

AutoUserScope

Enumeration

AutoUserScope enums

Value	Description
task	Specifies that the service should create a new user for the Task.
pool	Specifies that the Task runs as the common auto user Account which is created on every Compute Node in a Pool.

AutoUserSpecification

Object

Specifies the options for the auto user that runs an Azure Batch Task.

Name	Type	Description
elevationLevel	ElevationLevel	The elevation level of the auto user. The default value is nonAdmin.
scope	AutoUserScope	The scope for the auto user. The default value is pool. If the pool is running Windows a value of Task should be specified if stricter isolation between tasks is required. For example, if the task mutates the registry in a way which could impact other tasks.

BatchAccessScope

Enumeration

BatchAccessScope enums

Value	Description
job	Grants access to perform all operations on the Job containing the Task.

BatchAffinityInfo

Object

A locality hint that can be used by the Batch service to select a Compute Node on which to start a Task.

Name	Type	Description
affinityId	string	An opaque string representing the location of a Compute Node or a Task that has run previously. You can pass the affinityId of a Node to indicate that this Task needs to run on that Compute Node. Note that this is just a soft affinity. If the target Compute Node is busy or unavailable at the time the Task is scheduled, then the Task will be scheduled elsewhere.

BatchApplicationPackageReference

Object

A reference to an Package to be deployed to Compute Nodes.

Name	Type	Description
applicationId	string	The ID of the application to deploy. When creating a pool, the package's application ID must be fully qualified (/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Batch/batchAccounts/{accountName}/applications/{applicationName}).
version	string	The version of the application to deploy. If omitted, the default version is deployed. If this is omitted on a Pool, and no default version is specified for this application, the request fails with the error code InvalidApplicationPackageReferences and HTTP status code 409. If this is omitted on a Task, and no default version is specified for this application, the Task fails with a pre-processing error.

BatchError

Object

An error response received from the Azure Batch service.

Name	Type	Description
code	string	An identifier for the error. Codes are invariant and are intended to be consumed programmatically.
message	BatchErrorMessage	A message describing the error, intended to be suitable for display in a user interface.
values	BatchErrorDetail[]	A collection of key-value pairs containing additional details about the error.

BatchErrorDetail

Object

An item of additional information included in an Azure Batch error response.

Name	Type	Description
key	string	An identifier specifying the meaning of the Value property.
value	string	The additional information included with the error response.

BatchErrorMessage

Object

An error message received in an Azure Batch error response.

Name	Type	Description
lang	string	The language code of the error message.
value	string	The text of the message.

BatchErrorSourceCategory

Enumeration

BatchErrorSourceCategory enums

Value	Description
usererror	The error is due to a user issue, such as misconfiguration.
servererror	The error is due to an internal server issue.

BatchJobActionKind

Enumeration

BatchJobAction enums

Value	Description
none	Take no action.
disable	Disable the Job. This is equivalent to calling the disable Job API, with a disableTasks value of requeue.
terminate	Terminate the Job. The terminationReason in the Job's executionInfo is set to "TaskFailed".

BatchNodeIdentityReference

Object

The reference to a user assigned identity associated with the Batch pool which a compute node will use.

Name	Type	Description
resourceId	string (arm-id)	The ARM resource id of the user assigned identity.

BatchNodeInfo

Object

Information about the Compute Node on which a Task ran.

Name	Type	Description
affinityId	string	An identifier for the Node on which the Task ran, which can be passed when adding a Task to request that the Task be scheduled on this Compute Node.
nodeId	string	The ID of the Compute Node on which the Task ran.
nodeUrl	string (uri)	The URL of the Compute Node on which the Task ran.
poolId	string	The ID of the Pool on which the Task ran.
taskRootDirectory	string	The root directory of the Task on the Compute Node.
taskRootDirectoryUrl	string (uri)	The URL to the root directory of the Task on the Compute Node.

BatchTask

Object

Batch will retry Tasks when a recovery operation is triggered on a Node. Examples of recovery operations include (but are not limited to) when an unhealthy Node is rebooted or a Compute Node disappeared due to host failure. Retries due to recovery operations are independent of and are not counted against the maxTaskRetryCount. Even if the maxTaskRetryCount is 0, an internal retry due to a recovery operation may occur. Because of this, all Tasks should be idempotent. This means Tasks need to tolerate being interrupted and restarted without causing any corruption or duplicate data. The best practice for long running Tasks is to use some form of checkpointing.

Name	Type	Description
affinityInfo	BatchAffinityInfo	A locality hint that can be used by the Batch service to select a Compute Node on which to start the new Task.
applicationPackageReferences	BatchApplicationPackageReference[]	A list of Packages that the Batch service will deploy to the Compute Node before running the command line. Application packages are downloaded and deployed to a shared directory, not the Task working directory. Therefore, if a referenced package is already on the Node, and is up to date, then it is not re-downloaded; the existing copy on the Compute Node is used. If a referenced Package cannot be installed, for example because the package has been deleted or because download failed, the Task fails.
authenticationTokenSettings	AuthenticationTokenSettings	The settings for an authentication token that the Task can use to perform Batch service operations. If this property is set, the Batch service provides the Task with an authentication token which can be used to authenticate Batch service operations without requiring an Account access key. The token is provided via the AZ_BATCH_AUTHENTICATION_TOKEN environment variable. The operations that the Task can carry out using the token depend on the settings. For example, a Task can request Job permissions in order to add other Tasks to the Job, or check the status of the Job or of other Tasks under the Job.
commandLine	string	The command line of the Task. For multi-instance Tasks, the command line is executed as the primary Task, after the primary Task and all subtasks have finished executing the coordination command line. The command line does not run under a shell, and therefore cannot take advantage of shell features such as environment variable expansion. If you want to take advantage of such features, you should invoke the shell in the command line, for example using "cmd /c MyCommand" in Windows or "/bin/sh -c MyCommand" in Linux. If the command line refers to file paths, it should use a relative path (relative to the Task working directory), or use the Batch provided environment variable (https://learn.microsoft.com/azure/batch/batch-compute-node-environment-variables).
constraints	BatchTaskConstraints	The execution constraints that apply to this Task.
containerSettings	BatchTaskContainerSettings	The settings for the container under which the Task runs. If the Pool that will run this Task has containerConfiguration set, this must be set as well. If the Pool that will run this Task doesn't have containerConfiguration set, this must not be set. When this is specified, all directories recursively below the AZ_BATCH_NODE_ROOT_DIR (the root of Azure Batch directories on the node) are mapped into the container, all Task environment variables are mapped into the container, and the Task command line is executed in the container. Files produced in the container outside of AZ_BATCH_NODE_ROOT_DIR might not be reflected to the host disk, meaning that Batch file APIs will not be able to access those files.
creationTime	string (date-time)	The creation time of the Task.
dependsOn	BatchTaskDependencies	The Tasks that this Task depends on. This Task will not be scheduled until all Tasks that it depends on have completed successfully. If any of those Tasks fail and exhaust their retry counts, this Task will never be scheduled.
displayName	string	A display name for the Task. The display name need not be unique and can contain any Unicode characters up to a maximum length of 1024.
eTag	string	The ETag of the Task. This is an opaque string. You can use it to detect whether the Task has changed between requests. In particular, you can be pass the ETag when updating a Task to specify that your changes should take effect only if nobody else has modified the Task in the meantime.
environmentSettings	EnvironmentSetting[]	A list of environment variable settings for the Task.
executionInfo	BatchTaskExecutionInfo	Information about the execution of the Task.
exitConditions	ExitConditions	How the Batch service should respond when the Task completes.
id	string	A string that uniquely identifies the Task within the Job. The ID can contain any combination of alphanumeric characters including hyphens and underscores, and cannot contain more than 64 characters.
lastModified	string (date-time)	The last modified time of the Task.
multiInstanceSettings	MultiInstanceSettings	An object that indicates that the Task is a multi-instance Task, and contains information about how to run the multi-instance Task.
nodeInfo	BatchNodeInfo	Information about the Compute Node on which the Task ran.
outputFiles	OutputFile[]	A list of files that the Batch service will upload from the Compute Node after running the command line. For multi-instance Tasks, the files will only be uploaded from the Compute Node on which the primary Task is executed.
previousState	BatchTaskState	The previous state of the Task. This property is not set if the Task is in its initial Active state.
previousStateTransitionTime	string (date-time)	The time at which the Task entered its previous state. This property is not set if the Task is in its initial Active state.
requiredSlots	integer (int32)	The number of scheduling slots that the Task requires to run. The default is 1. A Task can only be scheduled to run on a compute node if the node has enough free scheduling slots available. For multi-instance Tasks, this must be 1.
resourceFiles	ResourceFile[]	A list of files that the Batch service will download to the Compute Node before running the command line. For multi-instance Tasks, the resource files will only be downloaded to the Compute Node on which the primary Task is executed. There is a maximum size for the list of resource files. When the max size is exceeded, the request will fail and the response error code will be RequestEntityTooLarge. If this occurs, the collection of ResourceFiles must be reduced in size. This can be achieved using .zip files, Application Packages, or Docker Containers.
state	BatchTaskState	The current state of the Task.
stateTransitionTime	string (date-time)	The time at which the Task entered its current state.
stats	BatchTaskStatistics	Resource usage statistics for the Task.
url	string (uri)	The URL of the Task.
userIdentity	UserIdentity	The user identity under which the Task runs. If omitted, the Task runs as a non-administrative user unique to the Task.

BatchTaskConstraints

Object

Execution constraints to apply to a Task.

Name	Type	Description
maxTaskRetryCount	integer (int32)	The maximum number of times the Task may be retried. The Batch service retries a Task if its exit code is nonzero. Note that this value specifically controls the number of retries for the Task executable due to a nonzero exit code. The Batch service will try the Task once, and may then retry up to this limit. For example, if the maximum retry count is 3, Batch tries the Task up to 4 times (one initial try and 3 retries). If the maximum retry count is 0, the Batch service does not retry the Task after the first attempt. If the maximum retry count is -1, the Batch service retries the Task without limit, however this is not recommended for a start task or any task. The default value is 0 (no retries).
maxWallClockTime	string (duration)	The maximum elapsed time that the Task may run, measured from the time the Task starts. If the Task does not complete within the time limit, the Batch service terminates it. If this is not specified, there is no time limit on how long the Task may run.
retentionTime	string (duration)	The minimum time to retain the Task directory on the Compute Node where it ran, from the time it completes execution. After this time, the Batch service may delete the Task directory and all its contents. The default is 7 days, i.e. the Task directory will be retained for 7 days unless the Compute Node is removed or the Job is deleted.

BatchTaskContainerExecutionInfo

Object

Contains information about the container which a Task is executing.

Name	Type	Description
containerId	string	The ID of the container.
error	string	Detailed error information about the container. This is the detailed error string from the Docker service, if available. It is equivalent to the error field returned by "docker inspect".
state	string	The state of the container. This is the state of the container according to the Docker service. It is equivalent to the status field returned by "docker inspect".

BatchTaskContainerSettings

Object

The container settings for a Task.

Name	Type	Description
containerHostBatchBindMounts	ContainerHostBatchBindMountEntry[]	The paths you want to mounted to container task. If this array is null or be not present, container task will mount entire temporary disk drive in windows (or AZ_BATCH_NODE_ROOT_DIR in Linux). It won't' mount any data paths into container if this array is set as empty.
containerRunOptions	string	Additional options to the container create command. These additional options are supplied as arguments to the "docker create" command, in addition to those controlled by the Batch Service.
imageName	string	The Image to use to create the container in which the Task will run. This is the full Image reference, as would be specified to "docker pull". If no tag is provided as part of the Image name, the tag ":latest" is used as a default.
registry	ContainerRegistryReference	The private registry which contains the container Image. This setting can be omitted if was already provided at Pool creation.
workingDirectory	ContainerWorkingDirectory	The location of the container Task working directory. The default is 'taskWorkingDirectory'.

BatchTaskDependencies

Object

Specifies any dependencies of a Task. Any Task that is explicitly specified or within a dependency range must complete before the dependant Task will be scheduled.

Name	Type	Description
taskIdRanges	BatchTaskIdRange[]	The list of Task ID ranges that this Task depends on. All Tasks in all ranges must complete successfully before the dependent Task can be scheduled.
taskIds	string[]	The list of Task IDs that this Task depends on. All Tasks in this list must complete successfully before the dependent Task can be scheduled. The taskIds collection is limited to 64000 characters total (i.e. the combined length of all Task IDs). If the taskIds collection exceeds the maximum length, the Add Task request fails with error code TaskDependencyListTooLong. In this case consider using Task ID ranges instead.

BatchTaskExecutionInfo

Object

Information about the execution of a Task.

Name	Type	Description
containerInfo	BatchTaskContainerExecutionInfo	Information about the container under which the Task is executing. This property is set only if the Task runs in a container context.
endTime	string (date-time)	The time at which the Task completed. This property is set only if the Task is in the Completed state.
exitCode	integer (int32)	The exit code of the program specified on the Task command line. This property is set only if the Task is in the completed state. In general, the exit code for a process reflects the specific convention implemented by the application developer for that process. If you use the exit code value to make decisions in your code, be sure that you know the exit code convention used by the application process. However, if the Batch service terminates the Task (due to timeout, or user termination via the API) you may see an operating system-defined exit code.
failureInfo	BatchTaskFailureInfo	Information describing the Task failure, if any. This property is set only if the Task is in the completed state and encountered a failure.
lastRequeueTime	string (date-time)	The most recent time at which the Task has been requeued by the Batch service as the result of a user request. This property is set only if the requeueCount is nonzero.
lastRetryTime	string (date-time)	The most recent time at which a retry of the Task started running. This element is present only if the Task was retried (i.e. retryCount is nonzero). If present, this is typically the same as startTime, but may be different if the Task has been restarted for reasons other than retry; for example, if the Compute Node was rebooted during a retry, then the startTime is updated but the lastRetryTime is not.
requeueCount	integer (int32)	The number of times the Task has been requeued by the Batch service as the result of a user request. When the user removes Compute Nodes from a Pool (by resizing/shrinking the pool) or when the Job is being disabled, the user can specify that running Tasks on the Compute Nodes be requeued for execution. This count tracks how many times the Task has been requeued for these reasons.
result	BatchTaskExecutionResult	The result of the Task execution. If the value is 'failed', then the details of the failure can be found in the failureInfo property.
retryCount	integer (int32)	The number of times the Task has been retried by the Batch service. Task application failures (non-zero exit code) are retried, pre-processing errors (the Task could not be run) and file upload errors are not retried. The Batch service will retry the Task up to the limit specified by the constraints.
startTime	string (date-time)	The time at which the Task started running. 'Running' corresponds to the running state, so if the Task specifies resource files or Packages, then the start time reflects the time at which the Task started downloading or deploying these. If the Task has been restarted or retried, this is the most recent time at which the Task started running. This property is present only for Tasks that are in the running or completed state.

BatchTaskExecutionResult

Enumeration

BatchTaskExecutionResult enums

Value	Description
success	The Task ran successfully.
failure	There was an error during processing of the Task. The failure may have occurred before the Task process was launched, while the Task process was executing, or after the Task process exited.

BatchTaskFailureInfo

Object

Information about a Task failure.

Name	Type	Description
category	BatchErrorSourceCategory	The category of the Task error.
code	string	An identifier for the Task error. Codes are invariant and are intended to be consumed programmatically.
details	NameValuePair[]	A list of additional details related to the error.
message	string	A message describing the Task error, intended to be suitable for display in a user interface.

BatchTaskIdRange

Object

The start and end of the range are inclusive. For example, if a range has start 9 and end 12, then it represents Tasks '9', '10', '11' and '12'.

Name	Type	Description
end	integer (int32)	The last Task ID in the range.
start	integer (int32)	The first Task ID in the range.

BatchTaskState

Enumeration

BatchTaskState enums

Value	Description
active	The Task is queued and able to run, but is not currently assigned to a Compute Node. A Task enters this state when it is created, when it is enabled after being disabled, or when it is awaiting a retry after a failed run.
preparing	The Task has been assigned to a Compute Node, but is waiting for a required Job Preparation Task to complete on the Compute Node. If the Job Preparation Task succeeds, the Task will move to running. If the Job Preparation Task fails, the Task will return to active and will be eligible to be assigned to a different Compute Node.
running	The Task is running on a Compute Node. This includes task-level preparation such as downloading resource files or deploying Packages specified on the Task - it does not necessarily mean that the Task command line has started executing.
completed	The Task is no longer eligible to run, usually because the Task has finished successfully, or the Task has finished unsuccessfully and has exhausted its retry limit. A Task is also marked as completed if an error occurred launching the Task, or when the Task has been terminated.

BatchTaskStatistics

Object

Resource usage statistics for a Task.

Name	Type	Description
kernelCPUTime	string (duration)	The total kernel mode CPU time (summed across all cores and all Compute Nodes) consumed by the Task.
lastUpdateTime	string (date-time)	The time at which the statistics were last updated. All statistics are limited to the range between startTime and lastUpdateTime.
readIOGiB	number (float)	The total gibibytes read from disk by the Task.
readIOps	string (int64)	The total number of disk read operations made by the Task.
startTime	string (date-time)	The start time of the time range covered by the statistics.
url	string (uri)	The URL of the statistics.
userCPUTime	string (duration)	The total user mode CPU time (summed across all cores and all Compute Nodes) consumed by the Task.
waitTime	string (duration)	The total wait time of the Task. The wait time for a Task is defined as the elapsed time between the creation of the Task and the start of Task execution. (If the Task is retried due to failures, the wait time is the time to the most recent Task execution.).
wallClockTime	string (duration)	The total wall clock time of the Task. The wall clock time is the elapsed time from when the Task started running on a Compute Node to when it finished (or to the last time the statistics were updated, if the Task had not finished by then). If the Task was retried, this includes the wall clock time of all the Task retries.
writeIOGiB	number (float)	The total gibibytes written to disk by the Task.
writeIOps	string (int64)	The total number of disk write operations made by the Task.

ContainerHostBatchBindMountEntry

Object

The entry of path and mount mode you want to mount into task container.

Name	Type	Description
isReadOnly	boolean	Mount this source path as read-only mode or not. Default value is false (read/write mode). For Linux, if you mount this path as a read/write mode, this does not mean that all users in container have the read/write access for the path, it depends on the access in host VM. If this path is mounted read-only, all users within the container will not be able to modify the path.
source	ContainerHostDataPath	The path which be mounted to container customer can select.

ContainerHostDataPath

Enumeration

The paths which will be mounted to container task's container.

Value	Description
Shared	The path for multi-instances task to shared their files.
Startup	The path for start task.
VfsMounts	The path contains all virtual file systems are mounted on this node.
Task	The task path.
JobPrep	The job-prep task path.
Applications	The applications path.

ContainerRegistryReference

Object

A private container registry.

Name	Type	Description
identityReference	BatchNodeIdentityReference	The reference to the user assigned identity to use to access an Azure Container Registry instead of username and password.
password	string (password)	The password to log into the registry server.
registryServer	string (uri)	The registry URL. If omitted, the default is "docker.io".
username	string	The user name to log into the registry server.

ContainerWorkingDirectory

Enumeration

ContainerWorkingDirectory enums

Value	Description
taskWorkingDirectory	Use the standard Batch service Task working directory, which will contain the Task Resource Files populated by Batch.
containerImageDefault	Use the working directory defined in the container Image. Beware that this directory will not contain the Resource Files downloaded by Batch.

DependencyAction

Enumeration

DependencyAction enums

Value	Description
satisfy	Satisfy tasks waiting on this task; once all dependencies are satisfied, the task will be scheduled to run.
block	Blocks tasks waiting on this task, preventing them from being scheduled.

ElevationLevel

Enumeration

ElevationLevel enums

Value	Description
nonadmin	The user is a standard user without elevated access.
admin	The user is a user with elevated access and operates with full Administrator permissions.

EnvironmentSetting

Object

An environment variable to be set on a Task process.

Name	Type	Description
name	string	The name of the environment variable.
value	string	The value of the environment variable.

ExitCodeMapping

Object

How the Batch service should respond if a Task exits with a particular exit code.

Name	Type	Description
code	integer (int32)	A process exit code.
exitOptions	ExitOptions	How the Batch service should respond if the Task exits with this exit code.

ExitCodeRangeMapping

Object

A range of exit codes and how the Batch service should respond to exit codes within that range.

Name	Type	Description
end	integer (int32)	The last exit code in the range.
exitOptions	ExitOptions	How the Batch service should respond if the Task exits with an exit code in the range start to end (inclusive).
start	integer (int32)	The first exit code in the range.

ExitConditions

Object

Specifies how the Batch service should respond when the Task completes.

Name	Type	Description
default	ExitOptions	How the Batch service should respond if the Task fails with an exit condition not covered by any of the other properties. This value is used if the Task exits with any nonzero exit code not listed in the exitCodes or exitCodeRanges collection, with a pre-processing error if the preProcessingError property is not present, or with a file upload error if the fileUploadError property is not present. If you want non-default behavior on exit code 0, you must list it explicitly using the exitCodes or exitCodeRanges collection.
exitCodeRanges	ExitCodeRangeMapping[]	A list of Task exit code ranges and how the Batch service should respond to them.
exitCodes	ExitCodeMapping[]	A list of individual Task exit codes and how the Batch service should respond to them.
fileUploadError	ExitOptions	How the Batch service should respond if a file upload error occurs. If the Task exited with an exit code that was specified via exitCodes or exitCodeRanges, and then encountered a file upload error, then the action specified by the exit code takes precedence.
preProcessingError	ExitOptions	How the Batch service should respond if the Task fails to start due to an error.

ExitOptions

Object

Specifies how the Batch service responds to a particular exit condition.

Name	Type	Description
dependencyAction	DependencyAction	An action that the Batch service performs on Tasks that depend on this Task. Possible values are 'satisfy' (allowing dependent tasks to progress) and 'block' (dependent tasks continue to wait). Batch does not yet support cancellation of dependent tasks.
jobAction	BatchJobActionKind	An action to take on the Job containing the Task, if the Task completes with the given exit condition and the Job's onTaskFailed property is 'performExitOptionsJobAction'. The default is none for exit code 0 and terminate for all other exit conditions. If the Job's onTaskFailed property is noaction, then specifying this property returns an error and the add Task request fails with an invalid property value error; if you are calling the REST API directly, the HTTP status code is 400 (Bad Request).

MultiInstanceSettings

Object

Multi-instance Tasks are commonly used to support MPI Tasks. In the MPI case, if any of the subtasks fail (for example due to exiting with a non-zero exit code) the entire multi-instance Task fails. The multi-instance Task is then terminated and retried, up to its retry limit.

Name	Type	Description
commonResourceFiles	ResourceFile[]	A list of files that the Batch service will download before running the coordination command line. The difference between common resource files and Task resource files is that common resource files are downloaded for all subtasks including the primary, whereas Task resource files are downloaded only for the primary. Also note that these resource files are not downloaded to the Task working directory, but instead are downloaded to the Task root directory (one directory above the working directory). There is a maximum size for the list of resource files. When the max size is exceeded, the request will fail and the response error code will be RequestEntityTooLarge. If this occurs, the collection of ResourceFiles must be reduced in size. This can be achieved using .zip files, Application Packages, or Docker Containers.
coordinationCommandLine	string	The command line to run on all the Compute Nodes to enable them to coordinate when the primary runs the main Task command. A typical coordination command line launches a background service and verifies that the service is ready to process inter-node messages.
numberOfInstances	integer (int32)	The number of Compute Nodes required by the Task. If omitted, the default is 1.

NameValuePair

Object

Represents a name-value pair.

Name	Type	Description
name	string	The name in the name-value pair.
value	string	The value in the name-value pair.

OutputFile

Object

On every file uploads, Batch service writes two log files to the compute node, 'fileuploadout.txt' and 'fileuploaderr.txt'. These log files are used to learn more about a specific failure.

Name	Type	Description
destination	OutputFileDestination	The destination for the output file(s).
filePattern	string	A pattern indicating which file(s) to upload. Both relative and absolute paths are supported. Relative paths are relative to the Task working directory. The following wildcards are supported: * matches 0 or more characters (for example pattern abc* would match abc or abcdef), ** matches any directory, ? matches any single character, [abc] matches one character in the brackets, and [a-c] matches one character in the range. Brackets can include a negation to match any character not specified (for example [!abc] matches any character but a, b, or c). If a file name starts with "." it is ignored by default but may be matched by specifying it explicitly (for example .gif will not match .a.gif, but ..gif will). A simple example: ***.txt matches any file that does not start in '.' and ends with .txt in the Task working directory or any subdirectory. If the filename contains a wildcard character it can be escaped using brackets (for example abc[] would match a file named abc). Note that both \ and / are treated as directory separators on Windows, but only / is on Linux. Environment variables (%var% on Windows or $var on Linux) are expanded prior to the pattern being applied.
uploadOptions	OutputFileUploadConfig	Additional options for the upload operation, including under what conditions to perform the upload.

OutputFileBlobContainerDestination

Object

Specifies a file upload destination within an Azure blob storage container.

Name	Type	Description
containerUrl	string (uri)	The URL of the container within Azure Blob Storage to which to upload the file(s). If not using a managed identity, the URL must include a Shared Access Signature (SAS) granting write permissions to the container.
identityReference	BatchNodeIdentityReference	The reference to the user assigned identity to use to access Azure Blob Storage specified by containerUrl. The identity must have write access to the Azure Blob Storage container.
path	string	The destination blob or virtual directory within the Azure Storage container. If filePattern refers to a specific file (i.e. contains no wildcards), then path is the name of the blob to which to upload that file. If filePattern contains one or more wildcards (and therefore may match multiple files), then path is the name of the blob virtual directory (which is prepended to each blob name) to which to upload the file(s). If omitted, file(s) are uploaded to the root of the container with a blob name matching their file name.
uploadHeaders	OutputFileUploadHeader[]	A list of name-value pairs for headers to be used in uploading output files. These headers will be specified when uploading files to Azure Storage. Official document on allowed headers when uploading blobs: https://learn.microsoft.com/rest/api/storageservices/put-blob#request-headers-all-blob-types.

OutputFileDestination

Object

The destination to which a file should be uploaded.

Name	Type	Description
container	OutputFileBlobContainerDestination	A location in Azure blob storage to which files are uploaded.

OutputFileUploadCondition

Enumeration

OutputFileUploadCondition enums

Value	Description
tasksuccess	Upload the file(s) only after the Task process exits with an exit code of 0.
taskfailure	Upload the file(s) only after the Task process exits with a nonzero exit code.
taskcompletion	Upload the file(s) after the Task process exits, no matter what the exit code was.

OutputFileUploadConfig

Object

Options for an output file upload operation, including under what conditions to perform the upload.

Name	Type	Description
uploadCondition	OutputFileUploadCondition	The conditions under which the Task output file or set of files should be uploaded. The default is taskcompletion.

OutputFileUploadHeader

Object

An HTTP header name-value pair

Name	Type	Description
name	string	The case-insensitive name of the header to be used while uploading output files.
value	string	The value of the header to be used while uploading output files.

ResourceFile

Object

A single file or multiple files to be downloaded to a Compute Node.

Name	Type	Description
autoStorageContainerName	string	The storage container name in the auto storage Account. The autoStorageContainerName, storageContainerUrl and httpUrl properties are mutually exclusive and one of them must be specified.
blobPrefix	string	The blob prefix to use when downloading blobs from an Azure Storage container. Only the blobs whose names begin with the specified prefix will be downloaded. The property is valid only when autoStorageContainerName or storageContainerUrl is used. This prefix can be a partial filename or a subdirectory. If a prefix is not specified, all the files in the container will be downloaded.
fileMode	string	The file permission mode attribute in octal format. This property applies only to files being downloaded to Linux Compute Nodes. It will be ignored if it is specified for a resourceFile which will be downloaded to a Windows Compute Node. If this property is not specified for a Linux Compute Node, then a default value of 0770 is applied to the file.
filePath	string	The location on the Compute Node to which to download the file(s), relative to the Task's working directory. If the httpUrl property is specified, the filePath is required and describes the path which the file will be downloaded to, including the filename. Otherwise, if the autoStorageContainerName or storageContainerUrl property is specified, filePath is optional and is the directory to download the files to. In the case where filePath is used as a directory, any directory structure already associated with the input data will be retained in full and appended to the specified filePath directory. The specified relative path cannot break out of the Task's working directory (for example by using '..').
httpUrl	string (uri)	The URL of the file to download. The autoStorageContainerName, storageContainerUrl and httpUrl properties are mutually exclusive and one of them must be specified. If the URL points to Azure Blob Storage, it must be readable from compute nodes. There are three ways to get such a URL for a blob in Azure storage: include a Shared Access Signature (SAS) granting read permissions on the blob, use a managed identity with read permission, or set the ACL for the blob or its container to allow public access.
identityReference	BatchNodeIdentityReference	The reference to the user assigned identity to use to access Azure Blob Storage specified by storageContainerUrl or httpUrl.
storageContainerUrl	string (uri)	The URL of the blob container within Azure Blob Storage. The autoStorageContainerName, storageContainerUrl and httpUrl properties are mutually exclusive and one of them must be specified. This URL must be readable and listable from compute nodes. There are three ways to get such a URL for a container in Azure storage: include a Shared Access Signature (SAS) granting read and list permissions on the container, use a managed identity with read and list permissions, or set the ACL for the container to allow public access.

UserIdentity

Object

The definition of the user identity under which the Task is run. Specify either the userName or autoUser property, but not both.

Name	Type	Description
autoUser	AutoUserSpecification	The auto user under which the Task is run. The userName and autoUser properties are mutually exclusive; you must specify one but not both.
username	string	The name of the user identity under which the Task is run. The userName and autoUser properties are mutually exclusive; you must specify one but not both.