Exam AWS Certified Data Engineer - Associate DEA-C01 topic 1 question 92 discussion

AWS Glue job bookmarks are designed to handle incremental data processing by automatically tracking the state.

AWS Glue Bookmarks can be used to pin where the data processing last stopped hence help with incremental processing.

B - bookmarks is a key

The solution that will meet this requirement with the least coding effort is Option B: Enable job bookmarks for the ETL jobs to update the state after a run to keep track of previously processed data. AWS Glue job bookmarks help ETL jobs to keep track of data that has already been processed during previous runs. By enabling job bookmarks, the ETL jobs can skip the processed data and only process the new, incremental data. This feature is designed specifically for this use case and requires minimal coding effort. Options A, C, and D would require additional coding and operational effort. Option A would require creating a new ETL job and managing a DynamoDB table. Option C would involve setting up job metrics and CloudWatch, which doesn’t directly address processing incremental data. Option D would involve deleting data from S3 after processing, which might not be desirable if the original data needs to be retained. Therefore, Option B is the most suitable solution.