关键词：有界误差；有界响应时；BlinkDB 大数据
摘 要： BlinkDB allows users to trade-off query accuracy for response time, enabling interactive queries over massive data by running queries on data samples and presenting results annotated with meaningful error bars.We evaluate BlinkDB extensively against well-known database benchmarks and a number of real-world analytic workloads showing that it is possible to implement an end-to-end query approximation pipeline that produces approximate answers with reliable error bars at interactive speeds.