Developing a Real-Time Processing Single-Task DLI Spark Job

Job Name

Yes

Enter the DLI Spark job name.

The job name can contain 1 to 64 characters. Only letters, digits, hyphens (-), and underscores (_) are allowed.

DLI Queue

Yes

Select a DLI queue.

Spark Version

No

• 2.3.2
• 2.4.5
• 3.1.1

Job Type

No

Type of the Spark image used by the job. The following options are available:

• Basic
• AI-enhanced
• Image

  If you select this option, select an image, and its version is automatically displayed. You can create images by following the instructions in Image Management.

Job Running Resource

No

• 8 vCPUs, 32 GB memory
• 16 vCPUs, 64 GB memory
• 32 vCPUs, 128 GB memory

Major Job Class

No

Java/Scala main class of the job

Spark program resource package

Yes

Resource package on which the Spark program depends

Resource Type

Yes

• OBS path
• DLI program package

DLI program package: The resource package file will not be uploaded to the DLI resource management system before the job is executed.

OBS path: The resource package file will not be uploaded to DLI resource management system before the job is executed. The OBS path where the file is located is part of the message body for starting the job. This type is recommended.

Group

No

This parameter is required when Resource Type is set to DLI program package.

A Spark program resource package is uploaded to a specified group. The main JAR package and dependency package are uploaded to the same group.

• Use Existing: Select an existing group.
• Create New: Create a group. The group name can contain only letters, digits, periods (.), hyphens (-), and underscores (_).
• Do not use

Major-Class Entry Parameters

No

Press Enter to separate parameters.

Spark program resource package

No

Enter parameters in key=value format and separate parameters by pressing Enter.

Module Name

No

Select one or more module names.

Metadata Access

No

Whether metadata can be accessed

To access the OBS table created by the DLI SQL job in the DLI Spark job, enable metadata access.

Job Status Polling Interval (s)

Yes

Set the interval at which the system checks whether the job is complete. The interval can range from 30s to 60s, or 120s, 180s, 240s, or 300s.

During job execution, the system checks the job status at the configured interval.

Maximum Wait Time

Yes

Set the timeout interval for the job. If the job is not complete within the timeout interval and retry is enabled, the job will be executed again.

Retry upon Failure

No

Whether to re-execute a node if it fails to be executed.

• Yes: The node task will be re-executed, and the following parameters must be configured:
  • Retry upon Timeout
  • Maximum Retries
  • Retry Interval (seconds)
• No: The node will not be re-executed. This is the default setting.
  NOTE:

  If retry is configured for a job node and the timeout duration is configured, the system allows you to retry a node when the node execution times out.

  If a node is not re-executed when it fails upon timeout, you can go to the Default Configuration page to modify this policy.

  Retry upon Timeout is displayed only when Retry upon Failure is set to Yes.

Owner

An owner configured during job creation is automatically matched. This parameter value can be modified.

Job Agency

This parameter is available when Scheduling Identities is set to Yes.

After an agency is configured, the job interacts with other services as an agency during job execution.

Priority

Priority configured during job creation is automatically matched. This parameter value can be modified.

Execution Timeout

Timeout of the job instance. If this parameter is set to 0 or is not set, this parameter does not take effect. If the notification function is enabled for the job and the execution time of the job instance exceeds the preset value, the system sends a specified notification, and the job keeps running.

Exclude Waiting Time from Instance Timeout Duration

Whether to exclude the wait time from the instance execution timeout duration

If you select this option, the time to wait before an instance starts running is excluded from the timeout duration. You can modify this setting on the Default Configuration page.

If you do not select this option, the time to wait before an instance starts running is included in the timeout duration.

Custom Parameter

Set the name and value of the parameter.

Job Tag

Configure job tags to manage jobs by category.

Click Add to add a tag to the job. You can also select a tag configured in Managing Job Tags.

Variables

Add

Click Add and enter the variable parameter name and parameter value in the text boxes.

• Parameter

  Only letters, numbers, hyphens, and underscores (_) are allowed.

• Parameter Value
  • The string type of parameter value is a character string, for example, str1.
  • The numeric type of parameter value is a number or operation expression.

After the parameter is configured, it is referenced in the format of ${Parameter name} in the job.

Edit Parameter Expression

Click next to the parameter value text box. In the displayed dialog box, edit the parameter expression. For more expressions, see Expression Overview.

Modifying a Job

Change the parameter name or value in the corresponding text boxes.

Mask

If the parameter value is a key, click to mask the value for security purposes.

Delete

Click next to the parameter name and value text boxes to delete the job parameter.

Constant Parameter

Add

Click Add and enter the constant parameter name and parameter value in the text boxes.

• Parameter

  Only letters, numbers, hyphens, and underscores (_) are allowed.

• Parameter Value
  • The string type of parameter value is a character string, for example, str1.
  • The numeric type of parameter value is a number or operation expression.

After the parameter is configured, it is referenced in the format of ${Parameter name} in the job.

Edit Parameter Expression

Click next to the parameter value text box. In the displayed dialog box, edit the parameter expression. For more expressions, see Expression Overview.

Modifying a Job

Modify the parameter name and parameter value in text boxes and save the modifications.

Delete

Click next to the parameter name and value text boxes to delete the job parameter.

Workspace Environment Variables

View the variables and constants that have been configured in the workspace.

Current Time

This parameter is displayed only when Scheduling Type is set to Run once. The default value is the current time.

Event Triggering Time

This parameter is displayed only when Scheduling Type is set to Event-based. The default value is the time when an event is triggered.

Scheduling Period

This parameter is displayed only when Scheduling Type is set to Run periodically. The default value is the scheduling period.

Start Time

This parameter is displayed only when Scheduling Type is set to Run periodically. The value is the configured job execution time.

Start Time

This parameter is displayed only when Scheduling Type is set to Run periodically. The value is the time when the periodic job scheduling starts.

Subsequent Instances

Number of job instances scheduled.

• The default value is 1 when Scheduling Type is set to Run once.
• The default value is 1 when Scheduling Type is set to Event-based.
• When Scheduling Type is set to Run periodically:

  If the number of instances exceeds 10, a maximum of 10 instances can be displayed, and the system displays message "A maximum of 10 instances are supported."