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https://issues.apache.org/jira/browse/SPARK-25013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16569811#comment-16569811
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Takeshi Yamamuro commented on SPARK-25013:
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Spark currently doesn't have a dialect for mariadb. Does the workaround work
fine in any case?
> 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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