  We are living in the era of big data. The Metaverse is an emerging technology
in the future, and it has a combination of big data, AI (artificial
intelligence), VR (Virtual Reality), AR (Augmented Reality), MR (mixed
reality), and other technologies that will diminish the difference between
online and real-life interaction. It has the goal of becoming a platform where
we can work, go shopping, play around, and socialize. Each user who enters the
Metaverse interacts with the virtual world in a data way. With the development
and application of the Metaverse, the data will continue to grow, thus forming
a big data network, which will bring huge data processing pressure to the
digital world. Therefore, big data processing technology is one of the key
technologies to implement the Metaverse. In this survey, we provide a
comprehensive review of how Metaverse is changing big data. Moreover, we
discuss the key security and privacy of Metaverse big data in detail. Finally,
we summarize the open problems and opportunities of Metaverse, as well as the
future of Metaverse with big data. We hope that this survey will provide
researchers with the research direction and prospects of applying big data in
the Metaverse.
