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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2021/11/12 14:49:00 UTC

[jira] [Created] (SPARK-37307) Don't obtain JDBC connection for empty partition

Sean R. Owen created SPARK-37307:
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             Summary: Don't obtain JDBC connection for empty partition
                 Key: SPARK-37307
                 URL: https://issues.apache.org/jira/browse/SPARK-37307
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 3.2.0
            Reporter: Sean R. Owen


In JdbcUtils.scala:savePartition, the code obtains a database connection even when there is no data in the partition. It works correctly and returns it, but, may be advantageous to simply skip that and other overhead if nothing will be written at all.



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