Node

A node in the YI-MapReduce cluster refers to a cloud server. The different types of nodes and their functions are as shown below.

Node Type	Feature
Master Node	A master node of the YI-MapReduce cluster that deploys control processes such as Doris FE and Elasticsearch Master.. The Master node group employs anti-affinity technology by default, distributing virtual machines across different physical machines to ensure high availability of services.
Core Node	A worker node of the YI-MapReduce cluster that stores and computes data.

Doris

Apache Doris is a high-performance, real-time analytical database underpinned by an MPP architecture. It stands out for its speed and ease-of-use, delivering query results from massive datasets in a sub-second response time. Doris supports both high-concurrency point query scenarios and high-throughput complex analysis scenarios. This makes it an excellent choice for report analysis, ad-hoc querying, unified data warehouse construction, and data lake federated query acceleration, among other uses. On top of Doris, users can build various applications such as user behavior analysis, AB testing platforms, log retrieval analysis, user profile analysis, and order analysis.

Elasticsearch

Elasticsearch is an open-source, highly scalable distributed full-text search engine that can store and retrieve data almost in real time. It centralizes your data, providing swift search, finely tuned relevance, and robust analytics capabilities.