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Posted to issues@spark.apache.org by "Gengliang Wang (JIRA)" <ji...@apache.org> on 2017/06/22 06:57:00 UTC

[jira] [Created] (SPARK-21174) Validate sampling fraction in logical operator level

Gengliang Wang created SPARK-21174:
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             Summary: Validate sampling fraction in logical operator level
                 Key: SPARK-21174
                 URL: https://issues.apache.org/jira/browse/SPARK-21174
             Project: Spark
          Issue Type: Improvement
          Components: Optimizer
    Affects Versions: 2.2.0
            Reporter: Gengliang Wang
            Priority: Minor


Currently the validation of sampling fraction in dataset is incomplete.
As an improvement, validate sampling ratio in logical operator level:
    1) if with replacement: ratio should be nonnegative
    2) else: ratio should be on interval [0, 1]

Also add test cases for the validation.




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