[jira] [Resolved] (SPARK-16717) Dataframe (jdbc) is missing a way to link and external function to get a connection

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-16717?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-16717.
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    Resolution: Incomplete

> Dataframe (jdbc) is missing a way to link and external function to get a connection
> -----------------------------------------------------------------------------------
>
>                 Key: SPARK-16717
>                 URL: https://issues.apache.org/jira/browse/SPARK-16717
>             Project: Spark
>          Issue Type: Improvement
>    Affects Versions: 1.6.2
>            Reporter: Marco Colombo
>            Priority: Minor
>              Labels: bulk-closed
>
> In JdbcRRD it was possible to use a function to get a JDBC connection. This allow an external handling of the connections while now this is no more possible with dataframes. 
> Please consider an addition to Dataframes for using an externally provided connectionFactory (such as a connection pool) in order to make data loading more efficient, avoiding connection close/recreation. Connections should be taken from provided function and returned to a second function whenever no more used by the RRD. So this will make jdbc handling more efficient.
> I.e. extending DataFrame class with a method like jdbc(Function0<java.sql.Connection> getConnection, Function0 releaseConnection(java.sql.Connection))



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