说出至少6个Hadoop生态系统组件 及其作用

Sure, here are six Hadoop ecosystem components and their functions:

1. HDFS (Hadoop Distributed File System) - it is a distributed file system that provides high-throughput access to application data.

2. MapReduce - it is a programming model and software framework for parallel processing of large data sets.

3. YARN (Yet Another Resource Negotiator) - it is a cluster management technology that allows multiple data processing engines such as Apache Hadoop MapReduce, Apache Storm, and Apache Spark to run together.

4. Hive - it is a data warehousing framework which provides data summarization, query and analysis.

5. Pig - it is a platform for analyzing large data sets which consist of a high-level language for expressing data analysis programs.

6. HBase - it is an open-source, distributed, non-relational database for storing and managing large amounts of structured and semi-structured data across many commodity servers.

Hope that answers your question!