Open Sourcing Bullet, Yahoo’s Forward-Looking Query Engine for Streaming Data

What this post added

This post announces the open-sourcing of Bullet, Yahoo's forward-looking query engine for streaming data. It details Bullet's architecture, capabilities (filtering, aggregation, distributions), and its unique 'look-forward' approach that avoids data persistence. The post highlights its scalability, performance metrics (700+ queries, 1.5M records/sec), and its implementation on Storm, with extensibility to other stream processing engines. It also describes its usage at Yahoo for instrumentation validation, continuous delivery testing, and cardinality checks.