Databricks Data Engineer Associate Question 380
Single answerYou are working on a Databricks project where multiple source locations, such as cloud storage buckets, are being used to ingest data. One of these locations is utilizing Auto Loader for streaming data ingestion. How can you identify which source location is configured with Auto Loader?
- A
Check the presence of a checkpoint directory associated with the source location.
- B
Verify if the source location is configured with a schema detection option in the code.
- C
Inspect the data files in the source location for metadata tags added by Auto Loader.
- D
Look for a specific Auto Loader configuration in the cluster event logs.
Show answer and explanation
Correct answer: B
Explanation
Auto Loader is a feature in Databricks designed for efficient ingestion of data from cloud storage locations. It utilizes schema detection and schema evolution as part of its configuration. By examining the code for schema detection or schema evolution options, you can reliably determine if a source location is utilizing Auto Loader.
- A. Incorrect.
While a checkpoint directory is essential for state management in streaming jobs, its presence alone does not confirm the use of Auto Loader. It could also be used by other streaming mechanisms.
- B. Correct.
Auto Loader requires schema detection or schema evolution configuration in its setup. Identifying schema detection in the code is a reliable way to determine the use of Auto Loader.
- C. Incorrect.
Auto Loader does not add specific metadata tags to data files in the source location. This is not a valid approach to identify if Auto Loader is being used.
- D. Incorrect.
Cluster event logs do not explicitly show Auto Loader configurations. This is not a reliable way to identify if a source location is using Auto Loader.