부산대학교 도서관

We present in this paper two novel infrastructural services based on Hadoop for big data storage and computing in a Taiwan’s semiconductor wafer fabrication foundry. The two services include Hadoop data service (HDS) and distributed R language computing service (DRS), which have been built and operated in production systems for 3.5 years. They evolve over time by incrementally accommodating users’ requirements. HDS is a web- based distributed big data storage facility. Users simply rely on HDS to access data objects stored in Hadoop with the HTTP protocol. In addition, HDS is scalable and reliable. Moreover, HDS is efficient and effective by intelligently selecting either Hadoop distributed file system (HDFS) or database (HBase) for publishing data objects. Specifically, HDS is transparent to existing analytics and data inquiry applications, such as Spark and Hive. While HDS is a unified storage for supporting sequential and random data accesses for big data in the wafer fabrication foundry, DRS is a distributed computing framework for typical R language users. R users employ DRS to enjoy data-parallel computations, effortlessly and seamlessly. Similar to HDS, DRS can be horizontally scaled out. It guarantees the completion of computational jobs even with failures. In particular, it adaptively reallocates computational resources on the fly, minimizing job execution time and maximizing utilization of allocated resources. This paper discusses the design and implementation features for HDS and DRS. It also demonstrates their performance metrics.