本文将拆解“RDD局限性→DataFrame优势→优化实战”全流程，让你彻底搞懂“为什么DataFrame更快”，掌握Spark提速的“金钥匙”。 原理：RDD存储Java对象，每个对象包含字段元数据、引用指针等额外信息（如一个(Int, String)的Tuple对象约占40字节，实际数据仅12字节 ...

At present, publicly available datasets for road defect detection are relatively limited, with most providing only precise location annotations of defects, thereby failing to fully represent the ...

pysparkling - A pure Python implementation of Apache Spark's RDD and DStream interfaces. modin - Speed up your pandas workflows by changing a single line of code.

Jose M. Macias is an associate fellow in the Futures Lab within the Defense and Security Department at the Center for Strategic and International Studies (CSIS). His research focuses on the ...

There’s something immensely satisfying about taking a series of low impact CVEs, and stringing them together into a full exploit. That’s the story we have from [Mehmet Ince] of Prodraft, who found a ...