Scalable and Reliable Data Stream Processing

Sammanfattning: Data-stream management systems have for long been considered as a promising architecture for fast data management. The stream processing paradigm poses an attractive means of declaring persistent application logic coupled with state over evolving data. However, despite contributions in programming semantics addressing certain aspects of data streaming, existing approaches have been lacking a clear, universal specification for the underlying system execution. We investigate the case of data stream processing as a general-purpose scalable computing architecture that can support continuous and iterative state-driven workloads. Furthermore, we examine how this architecture can enable the composition of reliable, reconfigurable services and complex applications that go even beyond the needs of scalable data analytics, a major trend in the past decade.In this dissertation, we specify a set of core components and mechanisms to compose reliable data stream processing systems while adopting three crucial design principles: blocking-coordination avoidance, programming-model transparency, and compositionality. Furthermore, we identify the core open challenges among the academic and industrial state of the art and provide a complete solution using these design principles as a guide. Our contributions address the following problems: I) Reliable Execution and Stream State Management, II) Computation Sharing and Semantics for Stream Windows, and III) Iterative Data Streaming. Several parts of this work have been integrated into Apache Flink, a widely-used, open-source scalable computing framework, and supported the deployment of hundreds of long-running large-scale production pipelines worldwide.