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Posted to issues@spark.apache.org by "Ruifeng Zheng (Jira)" <ji...@apache.org> on 2026/08/05 08:56:00 UTC

[jira] [Created] (SPARK-58587) Use spillable sort for final IsotonicRegression pass

Ruifeng Zheng created SPARK-58587:
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             Summary: Use spillable sort for final IsotonicRegression pass
                 Key: SPARK-58587
                 URL: https://issues.apache.org/jira/browse/SPARK-58587
             Project: Spark
          Issue Type: Sub-task
          Components: ML
    Affects Versions: 5.0.0
            Reporter: Ruifeng Zheng


Move the final IsotonicRegression Pool Adjacent Violators pass from the driver to an executor after a spill-capable shuffle sort, reducing driver memory pressure before the final model is collected.\n\nDraft PR: https://github.com/apache/spark/pull/57788



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