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In the context of optimizing a Spark application's performance using the Spark UI, Ganglia UI, and the Cluster UI, consider the following scenario: Your application is experiencing slow performance and occasional failures. You need to diagnose the issue and implement the most effective solution to improve performance. The solution must consider cost efficiency, scalability, and minimal downtime. Which of the following actions should you take based on the insights provided by these UIs? (Choose one correct option)
In the context of optimizing a Spark application's performance using the Spark UI, Ganglia UI, and the Cluster UI, consider the following scenario: Your application is experiencing slow performance and occasional failures. You need to diagnose the issue and implement the most effective solution to improve performance. The solution must consider cost efficiency, scalability, and minimal downtime. Which of the following actions should you take based on the insights provided by these UIs? (Choose one correct option)
Explanation:
The correct approach involves a detailed analysis of the Spark UI to pinpoint inefficient stages and tasks, followed by targeted optimizations such as data repartitioning or transformation refinement. This method addresses the root cause of performance issues while considering cost efficiency and scalability. Options A, B, and D are incorrect because they either overlook critical performance indicators, propose solutions without thorough analysis, or fail to consider recovery options for node failures, potentially leading to unnecessary costs or downtime.