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Answer: Use time travel feature of Delta table to rollback to its previous version in case of any issues
Delta Lake's time travel feature allows you to access previous versions of your data without manual backups. This is achieved through automatic versioning of every operation. You can rollback to a specific version using a timestamp or version number, making it an efficient solution for data recovery and testing scenarios. The correct answer is to use the time travel feature for rollback in case of issues.
Author: LeetQuiz Editorial Team
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A junior data engineer is manually backing up data files before updating a Delta table, as a precaution. As a senior data engineer, which Delta Lake feature would you recommend to simplify this process?
A
Cloud object storage automatically backups the data
B
Use SHALLOW CLONE to copy data of the Delta table, run tests directly on main table and in case of any issues, restore data from clone table
C
Use time travel feature of Delta table to rollback to its previous version in case of any issues
D
Use DEEP CLONE to copy data of the Delta table, run tests on clone table and once satisfied, delete the main table and then use clone table as main table
E
Cloud object support automatic change-tracking and versioning
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