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From "Cheolgoo Kang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-6738) validationQuery option for JDBC storage plugin
Date Mon, 10 Sep 2018 17:03:00 GMT
Cheolgoo Kang created DRILL-6738:
------------------------------------

             Summary: validationQuery option for JDBC storage plugin
                 Key: DRILL-6738
                 URL: https://issues.apache.org/jira/browse/DRILL-6738
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - JDBC
    Affects Versions: 1.14.0
         Environment: Apache Drill version 1.14.0 running on CentOS 7.0.1406.
MySQL version 5.5.43 running on CentOS 6.4.
MySQL connector/j version 5.1.44.
            Reporter: Cheolgoo Kang


Currently JDBC storage plugin uses DBCP2 for the connection pooling, but it wouldn't validate
the connection's still available or not, and it'd just spit the connection lost error.

We should be able to have a validationQuery option described in [here|https://commons.apache.org/proper/commons-dbcp/configuration.html]
in Drill's JDBC storage plugin configuration.




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