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https://issues.apache.org/jira/browse/HIVE-11123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14717193#comment-14717193
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Ashutosh Chauhan commented on HIVE-11123:
-----------------------------------------
I am not sure if this will work for mysql. Earlier, determineDbType() was
overloaded which also executed actual logic alongwith db detection which will
no longer be the case. e.g, {{SET @@session.sql_mode=ANSI_QUOTES}} will not
execute any longer for mysql, which may cause problems.
> Fix how to confirm the RDBMS product name at Metastore.
> -------------------------------------------------------
>
> Key: HIVE-11123
> URL: https://issues.apache.org/jira/browse/HIVE-11123
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 1.2.0
> Environment: PostgreSQL
> Reporter: Shinichi Yamashita
> Assignee: Shinichi Yamashita
> Attachments: HIVE-11123.1.patch, HIVE-11123.2.patch,
> HIVE-11123.3.patch, HIVE-11123.4.patch
>
>
> I use PostgreSQL to Hive Metastore. And I saw the following message at
> PostgreSQL log.
> {code}
> < 2015-06-26 10:58:15.488 JST >ERROR: syntax error at or near "@@" at
> character 5
> < 2015-06-26 10:58:15.488 JST >STATEMENT: SET @@session.sql_mode=ANSI_QUOTES
> < 2015-06-26 10:58:15.489 JST >ERROR: relation "v$instance" does not exist
> at character 21
> < 2015-06-26 10:58:15.489 JST >STATEMENT: SELECT version FROM v$instance
> < 2015-06-26 10:58:15.490 JST >ERROR: column "version" does not exist at
> character 10
> < 2015-06-26 10:58:15.490 JST >STATEMENT: SELECT @@version
> {code}
> When Hive CLI and Beeline embedded mode are carried out, this message is
> output to PostgreSQL log.
> These queries are called from MetaStoreDirectSql#determineDbType. And if we
> use MetaStoreDirectSql#getProductName, we need not to call these queries.
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