[jira] [Resolved] (SPARK-25013) JDBC urls with jdbc:mariadb don't work as expected

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

     [ https://issues.apache.org/jira/browse/SPARK-25013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-25013.
----------------------------------
    Resolution: Won't Fix

I wouldn't add this into Spark for now unless there's strong request from a community for now.

> JDBC urls with jdbc:mariadb don't work as expected
> --------------------------------------------------
>
>                 Key: SPARK-25013
>                 URL: https://issues.apache.org/jira/browse/SPARK-25013
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.3.1
>            Reporter: Dieter Vekeman
>            Priority: Minor
>
> When using the MariaDB JDBC driver, the JDBC connection url should be  
> {code:java}
> jdbc:mariadb://localhost:3306/DB?user=someuser&password=somepassword
> {code}
> https://mariadb.com/kb/en/library/about-mariadb-connector-j/
> However this does not work well in Spark (see below)
> *Workaround*
> The MariaDB driver also supports using mysql which does work.
> The problem seems to have been described and identified in:
> https://jira.mariadb.org/browse/CONJ-421
> All works well with spark using connection string with {{"jdbc:mysql:..."}}, but not using {{"jdbc:mariadb:..."}} because MySQL dialect is then not used.
> when not used, defaut quote is {{"}}, not {{`}}
> So, some internal query generated by spark like {{SELECT `i`,`ip` FROM tmp}} will then be executed as {{SELECT "i","ip" FROM tmp}} with dataType previously retrieved, causing the exception
> The author of the comment says
> {quote}I'll make a pull request to spark so "jdbc:mariadb:" connection string can be handle{quote}
> Did the pull request get lost or should a new one be made?



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