Google Cloud Professional Data Engineer Exam

To manage heavy workloads without exceeding query limits in BigQuery, what strategy should be implemented for report generation?

1. Run all reports in interactive mode.

2. Schedule reports during off-peak hours.

3. Increase the number of concurrent queries allowed.

4. Use reserved slots for report generation.

The correct answer is: Schedule reports during off-peak hours.

The implementation of scheduling reports during off-peak hours is a highly effective strategy for managing heavy workloads in BigQuery. By timing the execution of report generation to coincide with periods of lower system demand, it helps avoid competing with other high-usage queries that may be running simultaneously. This approach can lead to improved performance and efficiency, as the system is not overloaded and resources are more readily available for processing the scheduled reports. Additionally, scheduling during off-peak hours ensures quicker report generation times and is beneficial for any team that relies on these reports for analysis, as it minimizes the impact on other users and workloads. This strategy effectively balances resource allocation and enhances the overall user experience by reducing the chance of hitting query limits during busy times. Using interactive mode, increasing the number of concurrent queries, or relying on reserved slots are less favorable strategies in this context. While those can have benefits, they may not address the issue of contention for resources and could still lead to performance bottlenecks depending on the workload and user patterns at any given time. Hence, scheduling reports for off-peak hours is a wise choice for efficient operations in BigQuery.