[jira] [Created] (SPARK-1939) Improve takeSample method in RDD

[Doris Xin (JIRA)]

Doris Xin created SPARK-1939:
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             Summary: Improve takeSample method in RDD
                 Key: SPARK-1939
                 URL: https://issues.apache.org/jira/browse/SPARK-1939
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
            Reporter: Doris Xin


reimplement takeSample with the ScaSRS algorithm



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