关键词: 算子优化, 流处理, 性能收益

Abstract: The arrival of the era of big data and mobile Internet lets people be in data torrent. Big data make the need more and more urgent to process data efficiently and real-timely. And big data also prompt research teams around the world to develop a lot of stream processing applications. The implementations of these stream processing applications use a variety of operator optimizations. Based on the research on these stream processing applications, this paper summarizes the most common eight operator optimizations of stream processing applications. And combined with practical examples, this paper introduces the features of these operator optimizations from aspects of performance gain, safety condition and dynamic. Then this paper discusses the further research direction in the field of operator optimizations and stream processing.

Key words: operator optimization, stream processing, performance gain