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Posted to issues@hbase.apache.org by "Wellington Chevreuil (Jira)" <ji...@apache.org> on 2023/12/14 21:12:00 UTC

[jira] [Updated] (HBASE-28246) Expose region cached size over JMX metrics and report in the RS UI

     [ https://issues.apache.org/jira/browse/HBASE-28246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wellington Chevreuil updated HBASE-28246:
-----------------------------------------
    Fix Version/s: 4.0.0-alpha-1

> Expose region cached size over JMX metrics and report in the RS UI
> ------------------------------------------------------------------
>
>                 Key: HBASE-28246
>                 URL: https://issues.apache.org/jira/browse/HBASE-28246
>             Project: HBase
>          Issue Type: Improvement
>          Components: BucketCache
>    Affects Versions: 4.0.0-alpha-1
>            Reporter: Wellington Chevreuil
>            Assignee: Wellington Chevreuil
>            Priority: Major
>             Fix For: 4.0.0-alpha-1
>
>         Attachments: Screenshot 2023-12-06 at 22.58.17.png
>
>
> With large file based bucket cache, the prefetch executor can take long time to complete cache all of the dataset. It would be useful to report how much % of regions data is already cached, in order to give an idea of how much work prefetch executor has done.
> This PRs adds jmx metrics for region cache % and also reports the same in the RS UI "Store File Metrics" tab as below:
> !Screenshot 2023-12-06 at 22.58.17.png|width=658,height=114!



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