Why do we need broadcast variables in Spark?

Why do we need broadcast variables in Spark?

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: hard

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

参考答案摘要

Broadcast variables let the developers maintain read-only variables cached on each machine instead of shipping a copy of it with tasks. They are used to give every node copy of a large input dataset e...

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