---
title: "Discussion on \"Broadcast Joins vs Sort-Merge Joins in Spark\" | Hashnode"
description: "Discussion on \"Broadcast Joins vs Sort-Merge Joins in Spark\". Spark picks your join strategy automatically — knowing when it picks wrong and why saves hours of debugging slow join stages"
url: "https://hashnode.com/posts/spark-broadcast-joins-vs-sort-merge-joins/69e437716e738bcf4b61fc26"
---

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# [Broadcast Joins vs Sort-Merge Joins in Spark](https://abstractalgorithms.hashnode.dev/spark-broadcast-joins-vs-sort-merge-joins?utm_source=hashnode&utm_medium=feed)

Spark picks your join strategy automatically — knowing when it picks wrong and why saves hours of debugging slow join stages

Apr 19 · 26 min read · abstractalgorithms.hashnode.dev  
Updated Jun 18  
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-   [#apache-spark](https://hashnode.com/tag/apache-spark)
-   [#joins](https://hashnode.com/tag/joins)
-   [#performance](https://hashnode.com/tag/performance)
-   [#intermediate](https://hashnode.com/tag/intermediate)

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