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Date: Sat, 8 Aug 2015 08:30:45 +0000 (UTC)
From: =?utf-8?Q?Micha=C5=82_W=C4=99grzyn_=28JIRA=29?= <jira@apache.org>
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Subject: [jira] [Updated] (HIVE-11501) HiveConnection.readOnly always throws
 a "Method not supported" exception
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     [ https://issues.apache.org/jira/browse/HIVE-11501?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:all-tabpanel ]

Micha=C5=82 W=C4=99grzyn updated HIVE-11501:
----------------------------------
    Attachment: HIVE-11501.patch

The patch fixes the issue by throwing only if the connection is closed or t=
he request tries to change the default, disabled read-only mode.

> HiveConnection.readOnly always throws a "Method not supported" exception
> ------------------------------------------------------------------------
>
>                 Key: HIVE-11501
>                 URL: https://issues.apache.org/jira/browse/HIVE-11501
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Micha=C5=82 W=C4=99grzyn
>            Assignee: Micha=C5=82 W=C4=99grzyn
>         Attachments: HIVE-11501.patch
>
>
> HiveConnection.setReadOnly's automatically generated implementation alway=
s throws a generic "Method not supported" exception and thus is not complia=
nt with the JDBC spec. Per JDBC spec, an exception can be thrown only if th=
e connection is closed, DB access error occurs or the method is called duri=
ng a transaction (which is not a case for HiveConnection).=20
> JDBC spec does not say a word about not supporting the method by the driv=
er. The most correct behavior could be to throw only if the request tries t=
o enable the read-only mode (as HiveConnection.isReadOnly always returns fa=
lse).
> This issue is a blocker for JDBC connection pools (i.e. HikariCP) that ex=
pect JDBC-compliant behavior from the driver.


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