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Posted to issues@spark.apache.org by "Xiangrui Meng (JIRA)" <ji...@apache.org> on 2015/05/14 17:02:59 UTC

[jira] [Created] (SPARK-7636) Significant performance regression with GradientDescent in 1.4

Xiangrui Meng created SPARK-7636:
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             Summary: Significant performance regression with GradientDescent in 1.4
                 Key: SPARK-7636
                 URL: https://issues.apache.org/jira/browse/SPARK-7636
             Project: Spark
          Issue Type: Bug
          Components: MLlib
    Affects Versions: 1.4.0
            Reporter: Xiangrui Meng
            Assignee: Xiangrui Meng
            Priority: Blocker


Saw significant performance regression (11s in 1.3 vs. 33s in 1.4) with SGD on a dataset of 1000000x1000. Need to investigate the root cause.



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