wangyum opened a new pull request #25404: [SPARK-28683][BUILD] Upgrade Scala to 2.12.10 URL: https://github.com/apache/spark/pull/25404 ## What changes were proposed in this pull request? This PR upgrade Scala to **2.12.9**. Release notes: - Faster compiler: 5–10% faster since 2.12.8 - Improved compatibility with JDK 11, 12, and 13 - Experimental support for build pipelining and outline type checking More details: https://github.com/scala/scala/releases/tag/v2.12.9 ## How was this patch tested? Existing tests
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