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Posted to issues@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2017/02/06 20:42:41 UTC

[jira] [Commented] (HIVE-15053) Beeline#addlocaldriver - reduce classpath scanning

    [ https://issues.apache.org/jira/browse/HIVE-15053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854701#comment-15854701 ] 

Zoltan Haindrich commented on HIVE-15053:
-----------------------------------------

[~vgumashta] seems like this have became forgotten...can you re-schedule it ? :)

> Beeline#addlocaldriver - reduce classpath scanning
> --------------------------------------------------
>
>                 Key: HIVE-15053
>                 URL: https://issues.apache.org/jira/browse/HIVE-15053
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>         Attachments: HIVE-15053.1.patch, HIVE-15053.1.patch, HIVE-15053.1.patch, HIVE-15053.2.patch
>
>
> There is a classpath scanning machinery inside {{ClassNameCompleter}}.
> I think the sole purpose of these things is to scan for jdbc drivers...(but not entirely sure)
> if it is indeed looking for jdbc drivers..then possibly this can be removed without any issues because modern jdbc drivers usually advertise their driver as a service-loadable class for {{java.sql.Driver}}
> http://www.onjava.com/2006/08/02/jjdbc-4-enhancements-in-java-se-6.html
> Auto-Loading of JDBC Driver



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