Karen Coppage updated HIVE-22971:
    Attachment: HIVE-22971.03.patch

> Eliminate file rename in insert-only compactor
> ----------------------------------------------
>                 Key: HIVE-22971
>                 URL: https://issues.apache.org/jira/browse/HIVE-22971
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Karen Coppage
>            Assignee: Karen Coppage
>            Priority: Major
>              Labels: ACID, compaction
>         Attachments: HIVE-22971.01.patch, HIVE-22971.02.patch, 
> HIVE-22971.03.patch
> File rename is expensive for object stores, so MM (insert-only) compaction 
> should skip that step when committing and write directly to base_x_cZ or 
> delta_x_y_cZ.
> This also fixes the issue that for MM QB compaction the temp tables were 
> stored under the table directory, and these temp dirs were never cleaned up.

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