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Cancel Subtask

Cancels the specified subtask.

Request

You can specify the Cancel Subtask request as follows.

MethodRequest URI
POSThttps://head_node_name:port/WindowsHPC/HPC_cluster_name/Job/job_identifier/Task/task_identifier/SubTask/subtask_identifier/Cancel

 

For instances of the REST web service that are hosted in Azure, the head node name should have a format of Windows_Azure_service_name.cloudapp.net.

To get the name to use for an HPC cluster that runs at least Microsoft HPC Pack 2008 R2 with Service Pack 3 (SP3), use the Get Clusters operation.

URI Parameters

You can specify the following additional parameters on the request URI.

ParameterDescription
Forced

Optional. Specifies whether to stop the subtask immediately without using the grace period for canceling a subtask.

True indicates that the subtask should stop immediately without using the grace period for canceling a subtask. False indicates that the subtask should use the grace period for canceling a subtask. The default value is False.

api-version

Optional. Specifies the version of the operation to use for this request. To specify Microsoft HPC Pack 2008 R2 with Service Pack 3 (SP3), use a value of 2011-11-01. The minimum version that supports this URI parameter is Microsoft HPC Pack 2008 R2 with SP3.

The value of this URI parameter is ignored if the request also contains the api-version header.

 

Request Headers

The following table describes required and optional request headers.

Request HeaderDescription
api-version

Optional. Specifies the version of the operation to use for this request. To specify Microsoft HPC Pack 2008 R2 with SP3, use a value of 2011-11-01. The minimum version that supports this header is Microsoft HPC Pack 2008 R2 with SP3.

The value specified in this header overrides the value specified in the api-version URI parameter if both are specified.

CCP_Version

Optional. Specifies the version of the operation to use for this request.

Deprecated beginning with Microsoft HPC Pack 2008 R2 with Service Pack 3 (SP3).

 

Request Body

The format of the request body is as follows.


<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">
Cancellation Message</string>


The request XML consists of a single string element that specifies a reason for the cancellation of the subtask. The maximum length of the string is 128 characters. If you do not want to specify a reason for the cancellation of the subtask, use an empty string element.

Response

The response includes an HTTP status code and a set of response headers.

Status Code

A successful operation returns status code 200 (OK). For more information about status codes, see HttpStatusCode.

The error response is dependent upon the api-version used in the request. If the api-version is not provided, or the api-version is earlier than 2011-11-01, then the error response will be an XML string (Note: The error message will vary based on the error):


<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">Error message text.</string>


If the api-version is 2011-11-01 or later, the error message will be a more descriptive XML response (Note: Values will vary based on the error):


<HpcWebServiceFault xmlns="http://schemas.microsoft.com/HPCS2008R2/common" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <Code>267386880</Code>
  <Message>Error message text.</Message>
  <Values i:nil="true" xmlns:a="http://schemas.datacontract.org/2004/07/System.Collections.Generic"/>
</HpcWebServiceFault>

Response Headers

The response for this operation includes the following headers.

Response HeaderDescription
x-ms-hpc-authoritychain

A comma-separated list of RFC 1918 IP addresses that indicate the sequence of instances of the REST web service that the operation called in order from left to right.

Only responses from instances of the REST web service that are hosted on Azure contain this header. Responses from instances of the REST web service that are hosted on premise omit this header.

This header is supported beginning with Microsoft HPC Pack 2008 R2 with SP3 and is not available in previous versions.

 

The response for this operation also includes standard HTTP headers. All standard headers conform to the HTTP/1.1 protocol specification.

Response Body

None.

Requirements

Product

HPC Pack 2008 R2 with at least SP2, or a later version of HPC Pack.

 

 

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