El Reg queries author Matei Zaharia on a decade of the project - Big data is no longer hailed as the "new oil." It has gone out of fashion, both in terms of hype and because its foundational technology – Apache Hadoop – was surpassed by cloud-based blob storage such as AWS S3. However, a sister project born in the big data era has become more influential in the modern world of LLMs and internet-scale data systems.