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https://issues.apache.org/jira/browse/HIVE-25701?focusedWorklogId=682571&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-682571
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ASF GitHub Bot logged work on HIVE-25701:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 17/Nov/21 12:28
Start Date: 17/Nov/21 12:28
Worklog Time Spent: 10m
Work Description: zabetak closed pull request #2790:
URL: https://github.com/apache/hive/pull/2790
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Issue Time Tracking
-------------------
Worklog Id: (was: 682571)
Time Spent: 0.5h (was: 20m)
> Declare JDBC drivers as runtime & optional dependencies
> -------------------------------------------------------
>
> Key: HIVE-25701
> URL: https://issues.apache.org/jira/browse/HIVE-25701
> Project: Hive
> Issue Type: Task
> Components: Standalone Metastore, Testing Infrastructure
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Currently, we are using the following JDBC drivers in various Hive modules:
> * MariaDB
> * MySQL
> * Oracle
> * Postgres
> * MSSQL
> * Derby
> MariaDB, MySQL, and Oracle licenses are not compatible with Apache License 2
> ([Category-X |https://www.apache.org/legal/resolved.html#category-x]) and in
> the past we used various ways to circumvent licensing problems (see
> HIVE-23284). Now, some of them appear as test scope dependency which is OKish
> but in the near future may lead again to licensing problems.
> JDBC drivers are only needed at runtime so they could all be declared at
> runtime scope. Moreover, Hive does not require a specific JDBC driver in
> order to operate so they are all optional.
> The goal of this issue is to declare every JDBC driver at runtime scope and
> mark it as optional
> ([ASF-optional|https://www.apache.org/legal/resolved.html#optional],
> [maven-optional|https://maven.apache.org/guides/introduction/introduction-to-optional-and-excludes-dependencies.html]).
>
> This has the following advantages:
> * Eliminates the risk to write code which needs JDBC driver classes in order
> to compile and potentially violate AL2.
> * Unifies the declaration of JDBC drivers making easier to add/remove some if
> necessary.
> * Removes the need to use download-maven-plugin and other similar workarounds
> to avoid licensing problems.
> * Simplifies the execution of tests using these drivers since now they are
> added in the runtime classpath automatically by maven.
> * Projects with dependencies depending on Hive will not inherit any JDBC
> driver by default.
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