A Fine-Grained Task Monitoring Mechanism in Spark Platform

The existing coarse-grained monitoring mechanism in Spark has much difficulty in analyzing and locating the bottleneck during the execution of tasks. Aiming to solve this problem, we divide the execution process of Spark tasks into several subphases, and propose a fine-grained subphases-based monitoring mechanism. The fine-grained monitoring mechanism can help users to understand the detail execution status of Spark tasks and be beneficial to analyze and locate the performance bottleneck in Spark.