What is port 18080?

Port 18080 is a non-standard HTTP port that is often used for web applications. It is commonly used for Apache Spark, a fast and general-purpose cluster computing system. This port is used for web UI and REST API, which allows users to monitor and manage their Spark clusters. It is important to note that port 18080 is not reserved by the Internet Assigned Numbers Authority (IANA) and may be used for other purposes as well. If you need to use port 18080 for your own application, be sure to check for conflicts and ensure that it is not already being used by another service on your network.