[
https://issues.apache.org/jira/browse/HIVE-16912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052389#comment-16052389
]
Naveen Gangam commented on HIVE-16912:
--------------------------------------
Hey [~aihuaxu]
So java.sql.Connection.getSchema()
(https://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#getSchema())
like a good replacement. I had tested it against Derby, Postgres and Oracle
and works great. This API was introduced in JDK7, so using older driver jars
will cause an issue.
I am uploading a patch with this fix.
> Improve table validator's performance against Oracle
> ----------------------------------------------------
>
> Key: HIVE-16912
> URL: https://issues.apache.org/jira/browse/HIVE-16912
> Project: Hive
> Issue Type: Sub-task
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Priority: Minor
> Attachments: HIVE-16912.patch
>
>
> Currently, this validator uses DatabaseMetaData.getTables() that takes in the
> order of minutes to return because of the number of SYSTEM tables present in
> Oracle.
> Providing a schema name via a system property would limit the number of
> tables being returned and thus improve performance.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
