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Posted to issues@spark.apache.org by "DjvuLee (JIRA)" <ji...@apache.org> on 2017/01/22 04:53:26 UTC

[jira] [Created] (SPARK-19327) Improve the partition method when read data from jdbc

DjvuLee created SPARK-19327:
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             Summary: Improve the partition method when read data from jdbc
                 Key: SPARK-19327
                 URL: https://issues.apache.org/jira/browse/SPARK-19327
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: DjvuLee


The partition method in `jdbc` when specify the column using the equal step, this can lead to skew between partitions. The new method introduce a balance partition method base on the elements, this can avoid the skew problem.



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