Databricks Data Engineer Associate Question 267
Select 3You are working with a Delta Lake table stored in a Databricks workspace. You want to inspect the directory structure of the underlying Delta Lake files to better understand its organization. Which of the following actions will help you achieve this?
- A
Navigate to the Delta Lake table's storage location using a file system utility like dbutils.fs.ls().
- B
Query the Delta Lake table using SQL to list all the files in the table.
- C
Inspect the '_delta_log' directory within the storage location to review transaction logs and metadata.
- D
Directly open the Parquet files in the Delta Lake table's directory to view the raw data.
- E
Use the Databricks File Browser UI to navigate through the storage location of the Delta Lake table.
Show answer and explanation
Correct answers: A, C, E
Explanation
Inspecting the directory structure of a Delta Lake table requires understanding its storage location and organization. Tools like dbutils.fs.ls() and the Databricks File Browser allow users to navigate the storage location, while the '_delta_log' directory provides vital metadata and transaction history. Querying the table or directly opening Parquet files does not help in comprehending the directory structure.
- A. Correct.
Correct. Using the dbutils.fs.ls() utility allows you to navigate the storage location of the Delta Lake table and inspect its directory structure.
- B. Incorrect.
Incorrect. Querying the Delta Lake table using SQL retrieves the data but does not provide information about the directory structure.
- C. Correct.
Correct. The '_delta_log' directory contains transaction logs and metadata files, which are essential parts of the Delta Lake directory structure.
- D. Incorrect.
Incorrect. While opening the Parquet files displays raw data, it does not provide insights into the overall directory structure.
- E. Correct.
Correct. The Databricks File Browser UI can be used to navigate the storage location of a Delta Lake table and inspect its directory structure.