From DIS

Latest: Maximum offset, indicating that the latest data will be extracted.
From last stop: Data read will start from which the last read ended.
Earliest: Minimum offset, indicating that the earliest data will be extracted.

The data in the message body is a record in CSV format that supports multiple delimiters. Messages cannot be parsed in binary or other formats.

If the source link of a job is a DIS link, configure the source job parameters based on Table 1.

**Table 1** Parameter description
Category	Parameter	Description	Example Value
Basic parameters	DIS Stream	DIS stream name	dis
	Permanent Running	Whether a job runs permanently. If a job is set to run for a long time, the job will fail if the DIS system is interrupted.	Yes
	DIS Partition ID	ID of the DIS partition. You can enter multiple partition IDs separated by commas (,).	0,1,2
	Offset	Initial offset when data is pulled from DIS Latest: Maximum offset, indicating that the latest data will be extracted. From last stop: Data read will start from which the last read ended. Earliest: Minimum offset, indicating that the earliest data will be extracted.	Latest
	Application Name	Unique identifier of the consumer application to be used. If no application exists, CDM creates one automatically.	cdm
	Data Format	Format used for parsing data. The options are as follows: Binary: Data is transferred directly. It is not converted to another format. This setting is suitable for file migration. CSV: Source data will be migrated after being converted in CSV format. JSON: Source data will be migrated after being converted in JSON format.	Binary
	Field Delimiter	This parameter is displayed when Data Format is set to CSV. The default value is comma (,). To set the Tab key as the delimiter, set this parameter to \t.	,
	Record Delimiter	This parameter is displayed when Data Format is set to CSV or JSON. It is used to separate each two records.	,
Advanced attributes	Max. Poll Records	(Optional) Maximum number of records per poll	100