1. The scalability of Hadoop clusters is one of its major features, Hadoop can be scaled up to thousands of nodes, which is appropriate for the continuous growth of data, the demand for particularly large amounts of data.

2. The cost of Hadoop is another major advantage, because Hadoop is an open source project, and not only from the software cost savings, hardware requirements are not high. The current trend of de-IOE is popular, and low-cost Hadoop is also a big push.

3. The Hadoop ecosystem is active and rich in open source projects around it, with many basic open source projects such as HBase, Hive, Impala, etc.

4.