Can you elaborate on Reducer in Hadoop MapReduce? Explain the core methods of Reducer?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

标签: Data Engineer

参考答案摘要

Reducer is the second stage of [data processing](https://www.simplilearn.com/what-is-data-processing-article) in the Hadoop Framework. The Reducer processes the data output of the mapper and produces ...

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