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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-5481) JdbcRDD requires JDBC 4 APIs, limiting compatible JDBC Drivers
Date Thu, 29 Jan 2015 13:02:36 GMT

    [ https://issues.apache.org/jira/browse/SPARK-5481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296798#comment-14296798
] 

Sean Owen commented on SPARK-5481:
----------------------------------

Given that JDBC 4 was introduced 9 years ago, are there JDBC 3 drivers really in any common
use today?

> JdbcRDD requires JDBC 4 APIs, limiting compatible JDBC Drivers
> --------------------------------------------------------------
>
>                 Key: SPARK-5481
>                 URL: https://issues.apache.org/jira/browse/SPARK-5481
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.2.0
>            Reporter: vijay
>
> JdbcRDD makes unnecessary use of JDBC 4 APIs.  To maintain broad jdbc driver support,
Spark should support JDBC 3.
> The issue is calling isClosed() prior to closing JDBC object.  isClosed() is part of
JDBC 4.  It is perfectly safe to close something that is already closed - this may throw an
exception (which is caught) but has no negative side affects.



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