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[SPARK-10036] [SQL] Load JDBC driver in DataFrameReader.jdbc and DataFrameWriter.jdbc
This PR uses `JDBCRDD.getConnector` to load JDBC driver before creating connection in `DataFrameReader.jdbc` and `DataFrameWriter.jdbc`. Author: zsxwing <zsxwing@gmail.com> Closes #8232 from zsxwing/SPARK-10036 and squashes the following commits: adf75de [zsxwing] Add extraOptions to the connection properties 57f59d4 [zsxwing] Load JDBC driver in DataFrameReader.jdbc and DataFrameWriter.jdbc
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- sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala 7 additions, 1 deletion...src/main/scala/org/apache/spark/sql/DataFrameReader.scala
- sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala 8 additions, 2 deletions...src/main/scala/org/apache/spark/sql/DataFrameWriter.scala
- sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRDD.scala 3 additions, 2 deletions...apache/spark/sql/execution/datasources/jdbc/JDBCRDD.scala
- sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala 2 additions, 2 deletions...ache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala
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