Overview Presto’s architecture originally only supported a single coordinator and a pool of workers. This has worked well for many years but created some challenges. To overcome these challenges, we came up with a new design with a disaggregated coordinator that allows the coordinator to be horizontally scaled out across a single pool of workers….
I’m a Senior Software Engineer in the data group at Drift, a conversational marketing platform that is used for qualifying leads faster, automatically booking meetings and connecting customers to the right business solutions more efficiently. I’ve used Presto quite a bit throughout my career, and I want to first give readers a quick overview of…
In a multi-tenant system like Presto careful memory management is required to keep the system stable and prevent individual queries from taking over all the resources. However, tracking the memory usage of data structures in an application (Presto) running on the Java Virtual Machine (JVM) requires a significant amount of work. In addition, Presto is…