What is the Heartbeat in Hadoop?

What is the Heartbeat in Hadoop?

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: easy

标签: interviewbit, data-engineer, topic-specific, data-engineering

参考答案摘要

The heartbeat is a communication link that runs between the Namenode and the Datanode. It's the signal that the Datanode sends to the Namenode at regular intervals. If a Datanode in HDFS fails to send...

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