What are the key components of Hadoop?
There are three key components of Hadoop:
- Hadoop HDFS (Hadoop Distributed File System) - the storage unit.
- Hadoop MapReduce - the processing unit.
- Hadoop YARN (Yet Another Resource Negotiator) - the resource management unit.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What are the key components of Hadoop?
### Input: 
### Response: There are three key components of Hadoop:
- Hadoop HDFS (Hadoop Distributed File System) - the storage unit.
- Hadoop MapReduce - the processing unit.
- Hadoop YARN (Yet Another Resource Negotiator) - the resource management unit.