Task - List

Service:

Batch Service

API Version:

2023-11-01.18.0

Lists all of the Tasks that are associated with the specified Job.
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 {batchUrl}/jobs/{jobId}/tasks?api-version=2023-11-01.18.0

With optional parameters:

GET {batchUrl}/jobs/{jobId}/tasks?$filter={$filter}&$select={$select}&$expand={$expand}&maxresults={maxresults}&timeout={timeout}&api-version=2023-11-01.18.0

URI Parameters

Name	In	Required	Type	Description
batchUrl	path	True	string	The base URL for all Azure Batch service requests.
jobId	path	True	string	The ID of the Job.
api-version	query	True	string	Client API Version.
$expand	query		string	An OData $expand clause.
$filter	query		string	An OData $filter clause. For more information on constructing this filter, see https://docs.microsoft.com/en-us/rest/api/batchservice/odata-filters-in-batch#list-tasks.
$select	query		string	An OData $select clause.
maxresults	query		integer int32	The maximum number of items to return in the response. A maximum of 1000 Tasks can be returned.
timeout	query		integer int32	The maximum time that the server can spend processing the request, in seconds. The default is 30 seconds.

Request Header

Media Types: "application/json; odata=minimalmetadata"

Name	Required	Type	Description
client-request-id		string uuid	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-rfc1123	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.

Responses

Name	Type	Description
200 OK	CloudTaskListResult	A response containing the list of Tasks. Headers client-request-id: string request-id: string ETag: string Last-Modified: string
Other Status Codes	BatchError	The error from the Batch service.

Security

azure_auth

Microsoft Entra OAuth 2.0 auth code flow

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

Scopes

Name	Description
user_impersonation	Impersonate your user account

Authorization

Type: apiKey
In: header

Examples

Task list

Sample Request

HTTP

GET account.region.batch.azure.com/jobs/jobId/tasks?api-version=2023-11-01.18.0

Sample Response

Status code:

200

{
  "value": [
    {
      "id": "task1",
      "url": "https://account.region.batch.azure.com/jobs/jobId/tasks/task1",
      "eTag": "0x8D4125FD1A825A4",
      "creationTime": "2016-11-21T22:43:31.4733476Z",
      "lastModified": "2016-11-21T22:43:31.4733476Z",
      "state": "active",
      "stateTransitionTime": "2016-11-21T22:43:31.4733476Z",
      "commandLine": "cmd /c echo task1",
      "userIdentity": {
        "autoUser": {
          "scope": "task",
          "elevationLevel": "nonadmin"
        }
      },
      "constraints": {
        "maxWallClockTime": "P10675199DT2H48M5.4775807S",
        "retentionTime": "P10675199DT2H48M5.4775807S",
        "maxTaskRetryCount": 0
      },
      "requiredSlots": 2,
      "executionInfo": {
        "retryCount": 0,
        "requeueCount": 0
      }
    },
    {
      "id": "task2",
      "url": "https://account.region.batch.azure.com/jobs/jobId/tasks/task2",
      "eTag": "0x8D4125FD2153345",
      "creationTime": "2016-11-21T22:43:31.6736345Z",
      "lastModified": "2016-11-21T22:43:32.1880389Z",
      "state": "active",
      "stateTransitionTime": "2016-11-21T22:43:31.6736345Z",
      "commandLine": "cmd /c echo task2",
      "userIdentity": {
        "autoUser": {
          "scope": "task",
          "elevationLevel": "nonadmin"
        }
      },
      "constraints": {
        "maxWallClockTime": "P10675199DT2H48M5.4775807S",
        "retentionTime": "P10675199DT2H48M5.4775807S",
        "maxTaskRetryCount": 3
      },
      "requiredSlots": 2,
      "executionInfo": {
        "retryCount": 0,
        "requeueCount": 0
      }
    }
  ]
}

Definitions

Name	Description
AccessScope	The Batch resources to which the token grants access.
AffinityInformation	A locality hint that can be used by the Batch service to select a Compute Node on which to start a Task.
ApplicationPackageReference	A reference to an Package to be deployed to Compute Nodes.
AuthenticationTokenSettings	The settings for an authentication token that the Task can use to perform Batch service operations.
AutoUserScope	The scope for the auto user
AutoUserSpecification	Specifies the parameters for the auto user that runs a Task on the Batch service.
BatchError	An error response received from the Azure Batch service.
BatchErrorDetail	An item of additional information included in an Azure Batch error response.
CloudTask	An Azure Batch Task.
CloudTaskListResult	The result of listing the Tasks in a Job.
ComputeNodeIdentityReference	The reference to a user assigned identity associated with the Batch pool which a compute node will use.
ComputeNodeInformation	Information about the Compute Node on which a Task ran.
ContainerRegistry	A private container registry.
ContainerWorkingDirectory	The location of the container Task working directory.
DependencyAction	An action that the Batch service performs on Tasks that depend on this Task.
ElevationLevel	The elevation level of the user.
EnvironmentSetting	An environment variable to be set on a Task process.
ErrorCategory	The category of the error.
ErrorMessage	An error message received in an Azure Batch error response.
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.
HttpHeader	An HTTP header name-value pair
JobAction	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'.
MultiInstanceSettings	Settings which specify how to run a multi-instance Task.
NameValuePair	Represents a name-value pair.
OutputFile	A specification for uploading files from an Azure Batch Compute Node to another location after the Batch service has finished executing the Task process.
OutputFileBlobContainerDestination	Specifies a file upload destination within an Azure blob storage container.
OutputFileDestination	The destination to which a file should be uploaded.
OutputFileUploadCondition	The conditions under which a Task output file or set of files should be uploaded.
OutputFileUploadOptions	Details about an output file upload operation, including under what conditions to perform the upload.
ResourceFile	A single file or multiple files to be downloaded to a Compute Node.
TaskConstraints	Execution constraints to apply to a Task.
TaskContainerExecutionInformation	Contains information about the container which a Task is executing.
TaskContainerSettings	The container settings for a Task.
TaskDependencies	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.
TaskExecutionInformation	Information about the execution of a Task.
TaskExecutionResult	The result of Task execution.
TaskFailureInformation	Information about a Task failure.
TaskIdRange	A range of Task IDs that a Task can depend on. All Tasks with IDs in the range must complete successfully before the dependent Task can be scheduled.
TaskState	The state of the Task.
TaskStatistics	Resource usage statistics for a Task.
UserIdentity	The definition of the user identity under which the Task is run.

AccessScope

The Batch resources to which the token grants access.

Name	Type	Description
job	string	Grants access to perform all operations on the Job containing the Task.

AffinityInformation

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.

ApplicationPackageReference

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.

AuthenticationTokenSettings

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

Name	Type	Description
access	AccessScope[]	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

The scope for the auto user

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

AutoUserSpecification

Specifies the parameters for the auto user that runs a Task on the Batch service.

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, or if certificates have been specified on the pool which should not be accessible by normal tasks but should be accessible by StartTasks.

BatchError

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	ErrorMessage	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

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.

CloudTask

An Azure Batch Task.

Name	Type	Description
affinityInfo	AffinityInformation	A locality hint that can be used by the Batch service to select a Compute Node on which to start the new Task.
applicationPackageReferences	ApplicationPackageReference[]	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://docs.microsoft.com/en-us/azure/batch/batch-compute-node-environment-variables).
constraints	TaskConstraints	The execution constraints that apply to this Task.
containerSettings	TaskContainerSettings	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	The creation time of the Task.
dependsOn	TaskDependencies	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	TaskExecutionInformation	Information about the execution of the Task.
exitConditions	ExitConditions	Specifies how the Batch service should respond when the Task completes. 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	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. 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.
nodeInfo	ComputeNodeInformation	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	TaskState	The previous state of the Task. This property is not set if the Task is in its initial Active state.
previousStateTransitionTime	string	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	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	TaskState	The current state of the Task.
stateTransitionTime	string	The time at which the Task entered its current state.
stats	TaskStatistics	Resource usage statistics for the Task.
url	string	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.

CloudTaskListResult

The result of listing the Tasks in a Job.

Name	Type	Description
odata.nextLink	string	The URL to get the next set of results.
value	CloudTask[]	The list of Tasks.

ComputeNodeIdentityReference

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

Name	Type	Description
resourceId	string	The ARM resource id of the user assigned identity.

ComputeNodeInformation

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	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	The URL to the root directory of the Task on the Compute Node.

ContainerRegistry

A private container registry.

Name	Type	Description
identityReference	ComputeNodeIdentityReference	The reference to the user assigned identity to use to access an Azure Container Registry instead of username and password. The reference to a user assigned identity associated with the Batch pool which a compute node will use.
password	string	The password to log into the registry server.
registryServer	string	The registry URL. If omitted, the default is "docker.io".
username	string	The user name to log into the registry server.

ContainerWorkingDirectory

The location of the container Task working directory.

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

DependencyAction

An action that the Batch service performs on Tasks that depend on this Task.

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

ElevationLevel

The elevation level of the user.

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

EnvironmentSetting

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.

ErrorCategory

The category of the error.

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

ErrorMessage

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.

ExitCodeMapping

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

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

ExitCodeRangeMapping

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

Name	Type	Description
end	integer	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	The first exit code in the range.

ExitConditions

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

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	JobAction	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).

HttpHeader

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

JobAction

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'.

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

MultiInstanceSettings

Settings which specify how to run a multi-instance Task.

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	The number of Compute Nodes required by the Task. If omitted, the default is 1.

NameValuePair

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

A specification for uploading files from an Azure Batch Compute Node to another location after the Batch service has finished executing the Task process.

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	OutputFileUploadOptions	Additional options for the upload operation, including under what conditions to perform the upload.

OutputFileBlobContainerDestination

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

Name	Type	Description
containerUrl	string	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	ComputeNodeIdentityReference	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	HttpHeader[]	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://docs.microsoft.com/en-us/rest/api/storageservices/put-blob#request-headers-all-blob-types

OutputFileDestination

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

The conditions under which a Task output file or set of files should be uploaded.

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

OutputFileUploadOptions

Details about 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.

ResourceFile

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	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	ComputeNodeIdentityReference	The reference to the user assigned identity to use to access Azure Blob Storage specified by storageContainerUrl or httpUrl The reference to a user assigned identity associated with the Batch pool which a compute node will use.
storageContainerUrl	string	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.

TaskConstraints

Execution constraints to apply to a Task.

Name	Type	Description
maxTaskRetryCount	integer	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	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	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.

TaskContainerExecutionInformation

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".

TaskContainerSettings

The container settings for a Task.

Name	Type	Description
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	ContainerRegistry	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'.

TaskDependencies

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	TaskIdRange[]	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.

TaskExecutionInformation

Information about the execution of a Task.

Name	Type	Description
containerInfo	TaskContainerExecutionInformation	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	The time at which the Task completed. This property is set only if the Task is in the Completed state.
exitCode	integer	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	TaskFailureInformation	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	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	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	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	TaskExecutionResult	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	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	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.

TaskExecutionResult

The result of Task execution.

Name	Type	Description
failure	string	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.
success	string	The Task ran successfully.

TaskFailureInformation

Information about a Task failure.

Name	Type	Description
category	ErrorCategory	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.

TaskIdRange

A range of Task IDs that a Task can depend on. All Tasks with IDs in the range must complete successfully before the dependent Task can be scheduled.

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

TaskState

The state of the Task.

Name	Type	Description
active	string	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.
completed	string	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.
preparing	string	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	string	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.

TaskStatistics

Resource usage statistics for a Task.

Name	Type	Description
kernelCPUTime	string	The total kernel mode CPU time (summed across all cores and all Compute Nodes) consumed by the Task.
lastUpdateTime	string	The time at which the statistics were last updated. All statistics are limited to the range between startTime and lastUpdateTime.
readIOGiB	number	The total gibibytes read from disk by the Task.
readIOps	integer	The total number of disk read operations made by the Task.
startTime	string	The start time of the time range covered by the statistics.
url	string	The URL of the statistics.
userCPUTime	string	The total user mode CPU time (summed across all cores and all Compute Nodes) consumed by the Task.
waitTime	string	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	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	The total gibibytes written to disk by the Task.
writeIOps	integer	The total number of disk write operations made by the Task.

UserIdentity

The definition of the user identity under which the Task is run.

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.