MRS Spark
Functions
The MRS Spark node is used to execute a predefined Spark job on MRS.
Parameters
Table 1, Table 2, and Table 3 describe the parameters of the MRS Sparknode node.
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 (>). By default, the node name is the same as that of the selected script. If you want the node name to be different from the script name, disable this function by referring to Disabling Auto Node Name Change. |
MRS Cluster Name |
Yes |
Name of the MRS cluster.
To create an MRS cluster, use either of the following methods:
|
MRS Resource Queue |
No |
Select a created MRS resource queue.
NOTE:
Select a queue you configured in the queue permissions of DataArts Security. If you set multiple resource queues for this node, the resource queue you select here has the highest priority. |
Spark Job Name |
Yes |
MRS job name. It can contain a maximum of 64 characters. Only letters, digits, hyphens (-), and underscores (_) are allowed. The system can automatically enter a job name in Job name_Node name format.
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. |
Process Type |
Yes |
Processing type of the Spark job
Note that this parameter only specifies the processing mode. You must set parameters for the selected mode. |
JAR Package |
Yes |
Select a JAR package. Before selecting a JAR package, upload the JAR package to the OBS bucket, create a resource on the Manage Resource page, and add the JAR package to the resource management list. For details, see Creating a Resource. |
JAR File Parameters |
No |
Parameters of the JAR package. |
Program Parameter |
No |
Used to configure optimization parameters such as threads, memory, and vCPUs for the job to optimize resource usage and improve job execution performance.
NOTE:
This parameter is mandatory if the cluster version is MRS 1.8.7 or later than MRS 2.0.1. For details about the program parameters of MRS Spark jobs, see Running a Spark Job in the MapReduce Service User Guide. |
Input Data Path |
No |
Path where the input data resides. |
Output Data Path |
No |
Path where the output data resides. |
Parameter |
Mandatory |
Description |
---|---|---|
Node Status Polling Interval (s) |
Yes |
How often the system check completeness of the node. The value ranges from 1 to 60 seconds. |
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 be executed again. |
Retry upon Failure |
Yes |
Whether to re-execute a node if it fails to be executed. Possible values:
|
Policy for Handling Subsequent Nodes If the Current Node Fails |
Yes |
Operation that will be performed if the node fails to be executed. Possible values:
|
Enable Dry Run |
No |
If you select this option, the node will not be executed, and a success message will be returned. |
Task Groups |
No |
Select a task group. If you select a task group, you can control the maximum number of concurrent nodes in the task group in a fine-grained manner in scenarios where a job contains multiple nodes, a data patching task is ongoing, or a job is rerunning. |
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. |
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. |
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. |
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