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[SPARK-7746][SQL] Add FetchSize parameter for JDBC driver
JIRA: https://issues.apache.org/jira/browse/SPARK-7746 Looks like an easy to add parameter but can show significant performance improvement if the JDBC driver accepts it. Author: Liang-Chi Hsieh <viirya@gmail.com> Closes #6283 from viirya/jdbc_fetchsize and squashes the following commits: de47f94 [Liang-Chi Hsieh] Don't keep fetchSize as single parameter. b7bff2f [Liang-Chi Hsieh] Add FetchSize parameter for JDBC driver.
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- sql/core/src/main/scala/org/apache/spark/sql/jdbc/JDBCRDD.scala 6 additions, 2 deletions...re/src/main/scala/org/apache/spark/sql/jdbc/JDBCRDD.scala
- sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala 32 additions, 1 deletion.../src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala
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