---
title: "#shuffle articles | Hashnode"
description: "Explore 1 articles tagged #shuffle on Hashnode. Tutorials, guides, and how-tos from the community."
url: "https://hashnode.com/tag/shuffle"
---

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# #shuffle

1 posts · 0 followers

[Abstract Algorithms](https://hashnode.com/@abstractalgorithms) · [Apr 19](https://hashnode.com/posts/spark-shuffles-groupby-performance/69e437d76e738bcf4b61fc32)

### [Shuffles in Spark: Why groupBy Kills Performance](https://abstractalgorithms.hashnode.dev/spark-shuffles-groupby-performance?utm_source=hashnode&utm_medium=feed)

A Spark shuffle moves every matching key across the network — understanding when and why is the difference between a 2-minute and 2-hour job

31 min read · [abstractalgorithms.hashnode.dev](https://abstractalgorithms.hashnode.dev/spark-shuffles-groupby-performance?utm_source=hashnode&utm_medium=feed)