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https://issues.apache.org/jira/browse/SPARK-18629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-18629.
-------------------------------
Resolution: Fixed
Fix Version/s: 2.2.0
Issue resolved by pull request 16062
[https://github.com/apache/spark/pull/16062]
> Fix numPartition of JDBCSuite Testcase
> --------------------------------------
>
> Key: SPARK-18629
> URL: https://issues.apache.org/jira/browse/SPARK-18629
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Weiqing Yang
> Priority: Minor
> Fix For: 2.2.0
>
>
> When running any one of the test cases in JDBCSuite, you will get the
> following warning.
> {code}
> 10:34:26.389 WARN
> org.apache.spark.sql.execution.datasources.jdbc.JDBCRelation: The number of
> partitions is reduced because the specified number of partitions is less than
> the difference between upper bound and lower bound. Updated number of
> partitions: 3; Input number of partitions: 4; Lower bound: 1; Upper bound:
> 4.{code}
> This jira is to fix it.
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