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Posted to issues@spark.apache.org by "Yuming Wang (JIRA)" <ji...@apache.org> on 2019/08/10 10:34:00 UTC

[jira] [Created] (SPARK-28683) Upgrade scala to 2.12.9

Yuming Wang created SPARK-28683:
-----------------------------------

             Summary: Upgrade scala to 2.12.9
                 Key: SPARK-28683
                 URL: https://issues.apache.org/jira/browse/SPARK-28683
             Project: Spark
          Issue Type: Sub-task
          Components: Build
    Affects Versions: 3.0.0
            Reporter: Yuming Wang


h3. Highlights
 * Faster compiler: [5–10% faster since 2.12.8|https://scala-ci.typesafe.com/grafana/dashboard/db/scala-benchmark?orgId=1&from=1543097847070&to=1564631199344&var-branch=2.12.x&var-source=All&var-bench=HotScalacBenchmark.compile&var-host=scalabench%40scalabench%40], thanks to many optimizations (mostly by Jason Zaugg and Diego E. Alonso-Blas: kudos!)
 * Improved compatibility with JDK 11, 12, and 13 (see below)
 * Experimental support for build pipelining and outline type checking (see below)



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