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From "Jesus Camacho Rodriguez (Jira)" <j...@apache.org>
Subject [jira] [Work started] (HIVE-23302) Create HiveJdbcDatabaseAccessor for JDBC storage handler
Date Mon, 24 Aug 2020 22:01:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HIVE-23302 started by Jesus Camacho Rodriguez.
------------------------------------------------------
> Create HiveJdbcDatabaseAccessor for JDBC storage handler
> --------------------------------------------------------
>
>                 Key: HIVE-23302
>                 URL: https://issues.apache.org/jira/browse/HIVE-23302
>             Project: Hive
>          Issue Type: Bug
>          Components: StorageHandler
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>
> The {{JdbcDatabaseAccessor}} associated with the storage handler makes some SQL calls
to the RDBMS through the JDBC connection. There is a {{GenericJdbcDatabaseAccessor}} with
a generic implementation that the storage handler uses if there is no specific implementation
for a certain RDBMS.
> Currently, Hive uses the {{GenericJdbcDatabaseAccessor}}. Afaik the only generic query
that will not work is splitting the query based on offset and limit, since the syntax for
that query is different than the one accepted by Hive. We should create a {{HiveJdbcDatabaseAccessor}}
to override that query and possibly fix any other existing incompatibilities.



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