prestodb/presto

Presto is a distributed SQL query engine designed for interactive and batch analytics across diverse data sources. It provides a unified interface to query databases, object storage, and streaming platforms through a modular connector architecture. The system supports complex SQL operations, including aggregations, joins, and window functions, while offering extensibility via user-defined functions and a native execution engine for performance-critical workloads.

This period focused on significantly expanding the connector ecosystem with new integrations for MongoDB, Redis, Accumulo, Kafka, and HTTP sources, alongside a complete rewrite of the SQL parser and bytecode generation framework. The team standardized the codebase with automated formatting, modernized the test and benchmarking infrastructure, and introduced a pluggable security model for access control.

74 changes

This period focused on significantly expanding the connector ecosystem with new integrations for SQL Server, Elasticsearch, Pinot, Oracle, and Thrift-based services. Concurrently, the codebase underwent deep architectural refactoring, introducing a modular structure with dedicated modules for common utilities, caching, and benchmarking. These changes were supported by comprehensive test coverage and performance optimizations across the storage and execution layers.

96 changes

This period focused on significantly expanding Presto's connectivity and execution capabilities by introducing new connectors for BigQuery, Delta Lake, ClickHouse, and Arrow Flight, alongside a native sidecar plugin for expression optimization. The work also deepened the native execution engine integration with Velox, added a router service for cluster management, and introduced external authentication and database-backed session management.

79 changes

This period focused on enabling efficient data exchange and secure internal communication through the introduction of Apache Arrow support, a new Thrift codec toolkit, and JWT-based authentication. The team also expanded connector capabilities by adding support for Lance, Azure Blob Storage, and OpenLineage, while refactoring common utilities for better organization.

9 changes

prestodb/presto was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.