One of the key design concepts behind Percolator was to provide random access to the repository to process documents individually, and thus avoiding the global processing required by MapReduce.
Percolator的一个关键设计理念是：提供对库中文档的随机访问，以实现对单个文档的处理，从而避免了像MapReduce那样对文档全集进行处理。
By analyzing the FTP protocol, the article classifies the FTP statistical methods into three key issues, which are random port access, DPID processing and FTP port flux collection.
本文通过对FTP协议的分析，将FTP流量统计的方法归结为三个关键问题随机端口的获取、DPID的处理、FTP端口流量的采集。
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