The core features of Hadoop mainly include:
1. Distributed architecture, which can process a very large amount of data and achieve linear expansion of data performance.
2. Multi-tenant environment, realize the joint processing of data by multiple users, and data does not need to be frequently transmitted and exchanged
3. The file system adopts HDFS, with three copies of data to achieve high reliability of the file system
4. There are abundant computing engines, such as MR, Hbase, and SparkCore. Hive can be implemented based on MR, and SparkSQL can be implemented based on SparkCore.
5. The Spark computing framework based on Hadoop can solve more data processing computing needs in the future