Call GetApplication to retrieve application details - E-MapReduce

Retrieves the details of an application.

Operation description

Queries the details of an application.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

emr:GetApplication

get

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID.	cn-hangzhou
ClusterId	string	Yes	The request ID.	c-e6a9d46e92675****
ApplicationName	string	Yes	The application name.	HDFS

Response elements

Element	Type	Description	Example
	object	The returned result.
Application	object	The application.
ApplicationName	string	The application name.	HDFS
ApplicationVersion	string	The application version.	2.8.1
CommunityVersion	string	The community version.	2.8.1
Actions	array<object>	The list of actions supported by the application.
	array<object>	The action that you want to perform on requests that match the rule.
RunActionScope	string	The execution scope. Valid values: APPLICATION: the application scope. COMPONENT: the component scope. COMPONENT_INSTANCE: the component instance scope.	COMPONENT_INSTANCE
ComponentName	string	The component name.	DataNode
ActionName	string	The action name.	decommission
Description	string	The description of the action.	Description
Command	string	The action command.	decommission
ActionParams	array<object>	The list of action parameters.
	array<object>	The parameters of the action.
Key	string	The parameter name.	timeout
ValueAttribute	object	The parameter value attribute.
ValueType	string	The value type of the column.	int
ValueMaximum	string	The maximum range of values.	100
ValueMinimum	string	The minimum range of values.	1
ValueUnit	string	The unit of the value.	Seconds
ValueIncrementStep	string	The size of the value increment.	1
Description	string	Value description.	Set timeout period
Description	string	Description	Decommission action
ApplicationState	string	The status of the application.	RUNNING
RequestId	string	The request ID.	9E3A7161-EB7B-172B-8D18-FFB06BA3****

Examples

Success response

JSON format

{
  "Application": {
    "ApplicationName": "HDFS",
    "ApplicationVersion": "2.8.1",
    "CommunityVersion": "2.8.1",
    "Actions": [
      {
        "RunActionScope": "COMPONENT_INSTANCE",
        "ComponentName": "DataNode",
        "ActionName": "decommission",
        "Description": "Description",
        "Command": "decommission",
        "ActionParams": [
          {
            "Key": "timeout",
            "ValueAttribute": {
              "ValueType": "int",
              "ValueMaximum": "100",
              "ValueMinimum": "1",
              "ValueUnit": "Seconds",
              "ValueIncrementStep": "1",
              "Description": "Set timeout period"
            },
            "Description": "Decommission action"
          }
        ]
      }
    ],
    "ApplicationState": "RUNNING"
  },
  "RequestId": "9E3A7161-EB7B-172B-8D18-FFB06BA3****"
}

Error codes

HTTP status code	Error code	Error message
400	InvokeEcmError	An error occurred while invoking ECM service.
400	NotFound.Cluster	The cluster is not found.
400	ConflictParameters	Parameters that must not be used together. %s
400	IncompleteSignature	The request signature is invalid.
400	InvalidAction	The action %s requested is invalid.
400	InvalidParameter	The specified parameter %s is not valid.
400	InvalidParameterValue	The input parameter %s is invalid or out of range.
400	MissingAction	The action %s requested is missing.
400	MissingParameter	The input parameter %s that is mandatory for processing this request is not supplied.
400	NotAuthorized	You do not have permission to perform this action. %s
400	ThrottlingException	The request was denied due to request throttling. %s
500	InternalError	The request processing has failed due to some unknown error, exception or failure.
404	ResourceNotFound	The resource not found by %s.
503	ServiceFailure	The request has failed due to a temporary failure of %s service.
503	ServiceUnavailable	The request has failed due to a temporary failure of the server.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.