After initiating a data backfill operation for a periodic node, different types of data backfill instances are generated based on the scheduling type, including pending instances and generated instances. You can perform operations management on data backfill instances according to your business requirements, including viewing operation logs and rerunning operations.
Terminology
Pending instances: Instances that will be generated and submitted for execution in the future time period. Periodically scheduled data backfill nodes generate pending instances at 11:00 PM on the day before the scheduled runtime. For more information, see View and manage pending instances.
Generated instances: Executable instances that are generated from immediate execution data backfill nodes and pending instances. For more information, see Overview of data backfill instance operations.
Data backfill instance relationships
Different data backfill operations generate different data backfill instances. The relationships between data backfill operations and instances are as follows:
One-time immediate execution data backfill node: Data backfill instances are immediately generated and scheduled to run.
One-time scheduled execution data backfill node: Pending instances are generated and when the scheduled runtime is reached, data backfill instances are generated and scheduled to run.
Periodically scheduled execution data backfill node: Pending instances are generated at 11:00 PM on the day before the scheduled runtime, and when the scheduled runtime is reached, data backfill instances are generated and scheduled to run.
Manually executed data backfill node: Data backfill instances are immediately generated and scheduled to run.
Data backfill instance entry
In the top menu bar of the Dataphin homepage, select Develop > O&M.
In the left-side navigation pane, select Instance O&M > Data Backfill Instances.