Describe a scenario where the improper partitioning of data in a Delta Lake table leads to significant performance issues. Provide a detailed analysis of the performance problems encountered and propose a solution involving the use of CDF and optimized partitioning to address these issues.

Simulated

Partitioning has no impact on performance; it only affects data storage.

0.0%

Over partitioning leads to more efficient query execution.

0.9%

Improper partitioning can lead to performance issues due to small file sizes and scanning overhead. Using CDF and optimized partitioning can help mitigate these issues.

99.1%

Small files are beneficial for query performance.

0.0%

Databricks Certified Data Engineer - Professional

Get started today

Comments

Describe a scenario where the improper partitioning of data in a Delta Lake table leads to significant performance issues. Provide a detailed analysis of the performance problems encountered and propose a solution involving the use of CDF and optimized partitioning to address these issues.