[jira] [Commented] (HIVE-21443) Better usability for SHOW COMPACTIONS

["Gopal V (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-21443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16792087#comment-16792087 ] 

Gopal V commented on HIVE-21443:
--------------------------------

The sys.COMPACTIONS is better in general, because the authorization, cell-level masking can be implemented over a table entity than over a command.

> Better usability for SHOW COMPACTIONS
> -------------------------------------
>
>                 Key: HIVE-21443
>                 URL: https://issues.apache.org/jira/browse/HIVE-21443
>             Project: Hive
>          Issue Type: Improvement
>          Components: Transactions
>            Reporter: Todd Lipcon
>            Priority: Major
>
> Currently on a test cluster the output of 'SHOW COMPACTIONS' has 117k rows. This makes it basically useless to work with.
> For better usability, we should support syntax like 'SHOW COMPACTIONS IN <database>' or maybe 'SHOW COMPACTIONS ON <table>' (particular syntax to be chosen for consistency with other operations I suppose).
> Alternatively (or maybe in addition) it seems like it would be nice to expose the same data in a queryable table (eg in information_schema or a system namespace) so that I could do things like: SELECT dbname, state, count(*) from compactions group by 1,2;



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