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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-23302) Create HiveJdbcDatabaseAccessor for JDBC storage handler
Date Tue, 25 Aug 2020 15:09:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23302?focusedWorklogId=474357&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-474357
]

ASF GitHub Bot logged work on HIVE-23302:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 25/Aug/20 15:08
            Start Date: 25/Aug/20 15:08
    Worklog Time Spent: 10m 
      Work Description: jcamachor merged pull request #1427:
URL: https://github.com/apache/hive/pull/1427


   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 474357)
    Time Spent: 20m  (was: 10m)

> 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
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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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