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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19919) HiveServer2 - expose queryable data dictionary (ie Oracles' ALL_TAB_COLUMNS)
Date Mon, 18 Jun 2018 15:02:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16515827#comment-16515827
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Gunther Hagleitner commented on HIVE-19919:
-------------------------------------------

See HIVE-1010. hive-schema-3.0.0.hive.sql has the definitions. Can be initialized via SchemaTool.

> HiveServer2 - expose queryable data dictionary (ie Oracles' ALL_TAB_COLUMNS)
> ----------------------------------------------------------------------------
>
>                 Key: HIVE-19919
>                 URL: https://issues.apache.org/jira/browse/HIVE-19919
>             Project: Hive
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 3.0.0, 2.3.2
>            Reporter: t oo
>            Priority: Major
>
> All major db vendors have a table like information_schema.columns, all_tab_columns or
syscolumns containing table_name,column_name, data_type, col_order. Adding this feature to
HiveServer2 would be very convenient for users.
> This information is currently only available in the mysql metastore ie TBLS, COLS but
should be exposed up into the HiveServer2 10000 port connection. Thus saving users from having
2 connections (1 to see data, 1 to see metadata). For security reason too, mysql can be firewalled from
end-users.



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