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https://issues.apache.org/jira/browse/HDDS-11100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai resolved HDDS-11100.
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Fix Version/s: 1.5.0
Resolution: Implemented
> OM/SCM Metrics support displaying Netty off-heap memory.
> --------------------------------------------------------
>
> Key: HDDS-11100
> URL: https://issues.apache.org/jira/browse/HDDS-11100
> Project: Apache Ozone
> Issue Type: Improvement
> Components: OM, SCM
> Affects Versions: 1.4.1
> Reporter: Shilun Fan
> Assignee: Shilun Fan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.5.0
>
> Attachments: image-2024-07-09-09-21-10-139.png
>
>
> During a recent period, our cluster's DataNode (DN) exhibited high off-heap
> memory utilization, triggering frequent system.gc() calls. Upon reading
> relevant GC logs, we observed normal heap memory usage and monitored heap
> metrics. It became apparent that off-heap memory usage might be causing the
> system.gc() calls. We identified that DataNode can display off-heap memory
> usage, which indirectly helped us infer potential off-heap memory overflow.
> In HDDS-9070, we now support displaying Netty off-heap memory usage on
> DataNode, facilitating off-heap memory monitoring. Similarly, we can display
> Netty off-heap memory usage on OM and SCM.
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