Wellington Chevreuil created HBASE-28246: --------------------------------------------
Summary: 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 Reporter: Wellington Chevreuil Assignee: Wellington Chevreuil 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! -- This message was sent by Atlassian Jira (v8.20.10#820010)