MRS Spark
Function
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 Spark node.
Parameter |
Mandatory |
Description |
---|---|---|
Node Name |
Yes |
Name of the node. The value must consist of 1 to 128 characters and contain only letters, digits, and the following special characters: _-/<> |
MRS Cluster Name |
Yes |
Select the MRS cluster.
To create an MRS cluster, use either of the following methods:
|
Spark 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 more than 64 characters. If the job name does not meet requirements, the MRS job will fail to be submitted. |
JAR Package |
Yes |
Select 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 Managing an Existing Cluster > Job Management > Running a Spark Job in the MapReduce Service (MRS) 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 checks completeness of the node task. The value ranges from 1 to 60 seconds. |
Max. Node Execution Duration |
Yes |
Maximum duration of executing a node. When Retry upon Failure is set to Yes for a node, the node can be re-executed for numerous times upon an execution failure within the maximum duration. |
Retry upon Failure |
Yes |
Whether to re-execute a node after the node fails to be executed.
NOTE:
If Max. Node Execution Duration 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 |
Policies to be performed after the node fails to be executed:
|
Dry run |
No |
If you select this option, the node will not be executed, and a success message will be returned. |
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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