MRS Spark Python¶

Functions¶

The MRS Spark Python node is used to execute a predefined Spark Python job on MRS.

For details about how to use the MRS Spark Python operator, see Developing an MRS Spark Python Job.

Parameters¶

Table 1, Table 2, and Table 3 describe the parameters of the MRS Spark Pythonnode node.

**Table 1** Parameters of MRS Spark Python nodes¶
Parameter	Mandatory	Description
Node Name	Yes	Name of a node. The name must contain 1 to 128 characters, including only letters, numbers, underscores (_), hyphens (-), slashes (/), less-than signs (<), and greater-than signs (>).
MRS Cluster Name	Yes	Select an MRS cluster that supports Spark Python. Only a specific version of MRS supports Spark Python. Test the cluster first to ensure that it supports Spark Python. To create an MRS cluster, use either of the following methods: Click . On the Clusters page, create an MRS cluster. Go to the MRS console to create an MRS cluster. For details about how to create a cluster, see section "Custom Purchase of a Cluster" in MapReduce Service (MRS) Usage Guide .
Job Name	Yes	Name of an MRS job. The name contains 1 to 64 characters, including only letters, digits, and underscores (_). Note The job name cannot contain Chinese characters or more than 64 characters. If the job name does not meet requirements, the MRS job will fail to be submitted.
Parameter	Yes	Enter the parameters of the executable program of MRS. Use Enter to separate multiple parameters.
Attribute	No	Enter parameters in the key=value format. Use Enter to separate multiple parameters.

**Table 2** Advanced parameters¶
Parameter	Mandatory	Description
Max. Node Execution Duration	Yes	Execution timeout interval for the node. If retry is configured and the execution is not complete within the timeout interval, the node will not be retried and is set to the failed state.
Retry upon Failure	Yes	Indicates whether to re-execute a node task if its execution fails. Possible values: Yes: The node task will be re-executed, and the following parameters must be configured: Maximum Retries Retry Interval (seconds) No: The node task will not be re-executed. This is the default setting. Note If Timeout Interval is configured for the node, the node will not be executed again after the execution times out. Instead, the node is set to the failure state.
Failure Policy	Yes	Operation that will be performed if the node task fails to be executed. Possible values: End the current job execution plan: stops running the current job. The job instance status is Failed. Go to the next node: ignores the execution failure of the current node. The job instance status is Failure ignored. Suspend current job execution plan: suspends running the current job. The job instance status is Waiting. Suspend execution plans of the subsequent nodes: stops running subsequent nodes. The job instance status is Failed.

**Table 3** Lineage¶
Parameter	Description
Input
Add	Click Add. In the Type drop-down list, select the type to be created. The value can be DWS, OBS, CSS, HIVE, DLI, or CUSTOM. DWS Connection Name: Click . In the displayed dialog box, select a DWS data connection. Database: Click . In the displayed dialog box, select a DWS database. Schema: Click . In the displayed dialog box, select a DWS schema. Table Name: Click . In the displayed dialog box, select a DWS table. OBS Path: Click . In the displayed dialog box, select an OBS path. CSS Cluster Name: Click . In the displayed dialog box, select a CSS cluster. Index: Enter a CSS index name. HIVE Connection Name: Click . In the displayed dialog box, select a HIVE data connection. Database: Click . In the displayed dialog box, select a HIVE database. Table Name: Click . In the displayed dialog box, select a HIVE table. CUSTOM Name: Enter a name of the CUSTOM type. Attribute: Enter an attribute of the CUSTOM type. You can add more than one attribute. DLI Connection Name: Click . In the displayed dialog box, select a DLI data connection. Database: Click . In the displayed dialog box, select a DLI database. Table Name: Click . In the displayed dialog box, select a DLI table.
OK	Click OK to save the parameter settings.
Cancel	Click Cancel to cancel the parameter settings.
Modify	Click to modify the parameter settings. After the modification, save the settings.
Delete	Click to delete the parameter settings.
View Details	Click to view details about the table created based on the input lineage.
Output
Add	Click Add. In the Type drop-down list, select the type to be created. The value can be DWS, OBS, CSS, HIVE, DLI, or CUSTOM. DWS Connection Name: Click . In the displayed dialog box, select a DWS data connection. Database: Click . In the displayed dialog box, select a DWS database. Schema: Click . In the displayed dialog box, select a DWS schema. Table Name: Click . In the displayed dialog box, select a DWS table. OBS Path: Click . In the displayed dialog box, select an OBS path. CSS Cluster Name: Click . In the displayed dialog box, select a CSS cluster. Index: Enter a CSS index name. HIVE Connection Name: Click . In the displayed dialog box, select a HIVE data connection. Database: Click . In the displayed dialog box, select a HIVE database. Table Name: Click . In the displayed dialog box, select a HIVE table. CUSTOM Name: Enter a name of the CUSTOM type. Attribute: Enter an attribute of the CUSTOM type. You can add more than one attribute. DLI Connection Name: Click . In the displayed dialog box, select a DLI data connection. Database: Click . In the displayed dialog box, select a DLI database. Table Name: Click . In the displayed dialog box, select a DLI table.
OK	Click OK to save the parameter settings.
Cancel	Click Cancel to cancel the parameter settings.
Modify	Click to modify the parameter settings. After the modification, save the settings.
Delete	Click to delete the parameter settings.
View Details	Click to view details about the table created based on the output lineage.

last updated: 2024-06-29 01:03