[jira] [Resolved] (KUDU-2056) Expose a metric for how much a tablet needs to be compacted

["Will Berkeley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-2056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Will Berkeley resolved KUDU-2056.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 1.9.0

> Expose a metric for how much a tablet needs to be compacted
> -----------------------------------------------------------
>
>                 Key: KUDU-2056
>                 URL: https://issues.apache.org/jira/browse/KUDU-2056
>             Project: Kudu
>          Issue Type: Improvement
>          Components: tablet
>            Reporter: Jean-Daniel Cryans
>            Assignee: Will Berkeley
>            Priority: Major
>             Fix For: 1.9.0
>
>
> Now that the maintenance manager is fast at scheduling tasks, I've seen clusters running 1.4 that are churning through compactions at a high rate with seemingly no end in sight. At least it *feels* like it, but there's no easy way to verify.
> I think it would be good to have some measure of how "uncompacted" a tablet is. Todd thinks we could just use the average "height" of what's seen on the "Rowset Layout Diagram" page.



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