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From Michał Węgrzyn (JIRA) <>
Subject [jira] [Created] (HIVE-11501) HiveConnection.readOnly always throws a "Method not supported" exception
Date Sat, 08 Aug 2015 08:25:45 GMT
Michał Węgrzyn created HIVE-11501:

             Summary: HiveConnection.readOnly always throws a "Method not supported" exception
                 Key: HIVE-11501
             Project: Hive
          Issue Type: Bug
            Reporter: Michał Węgrzyn
            Assignee: Michał Węgrzyn

HiveConnection.setReadOnly's automatically generated implementation always throws a generic
"Method not supported" exception and thus is not compliant with the JDBC spec. Per JDBC spec,
an exception can be thrown only if the connection is closed, DB access error occurs or the
method is called during a transaction (which is not a case for HiveConnection). 

JDBC spec does not say a word about not supporting the method by the driver. The most correct
behavior could be to throw only if the request tries to enable the read-only mode (as HiveConnection.isReadOnly
always returns false).

This issue is a blocker for JDBC connection pools (i.e. HikariCP) that expect JDBC-compliant
behavior from the driver.

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