Dremio Load Testing Methodologies and Techniques

This whitepaper outlines the methodologies and techniques for conducting load testing on the Dremio platform, which is designed to operate on large clusters. It begins by detailing the factors influencing query performance, such as the size of the executor engine, the number of engines, and the complexity of queries. The document emphasizes the importance of defining the scope of load tests, including the types of queries and the need for realistic concurrent user simulations. It also discusses the setup of monitoring tools to track CPU, I/O, and memory usage during tests. Furthermore, the paper describes how to analyze query execution results and manage potential out-of-memory errors that may arise during testing. It highlights best practices for simulating production workloads and optimizing resource allocation within the Dremio environment. The document concludes with recommendations for using specific tools provided by Dremio for effective load testing and monitoring.