I2 is an interactive development environment for real-time analysis pipelines, which is based on Apache Flink and Apache Zeppelin. The sheer amount of available streaming data frequently makes it impossible to visualize all data points at the same time. I2 coordinates running Flink jobs and corresponding visualizations such that only the currently depicted data points are processed in Flink and transferred towards the front end. We show how Flink jobs can adapt to changed visualization properties at runtime to allow interactive data exploration on high bandwidth data streams.
