Scenario: You are a data engineer at a large technology company that is considering implementing a new big data infrastructure. The management team is curious about the motivations and requirements that led to the development and adoption of Hadoop, as well as the key components of the Hadoop ecosystem.

Discussion Question: As a data engineer, how would you explain the factors that drove the development and adoption of Hadoop? Additionally, describe the essential components of the Hadoop ecosystem and how they contribute to the overall functionality and effectiveness of Hadoop for big data processing. Provide specific examples or use cases to illustrate your points.