Exactly. Basically most big data lives in hdfs and hdfs is part of hadoop. Even if you use Spark and Flink I would classify that as using Hadoop (under the hood

Exactly. Basically most big data lives in hdfs and hdfs is part of hadoop. Even if you use Spark and Flink I would classify that as using Hadoop (under the hood). > However, a very common setup is to use Flink to analyze data stored in the Hadoop Distributed File System (HDFS). -- https://wints.github.io/flink-web//faq.html https://wints.github.io/flink-web//faq.html