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https://issues.apache.org/jira/browse/HDDS-13969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sarveksha Yeshavantha Raju resolved HDDS-13969.
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Resolution: Fixed
> Add SCM Metric for Number of ReadOnly Datanodes
> -----------------------------------------------
>
> Key: HDDS-13969
> URL: https://issues.apache.org/jira/browse/HDDS-13969
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Sarveksha Yeshavantha Raju
> Assignee: Sarveksha Yeshavantha Raju
> Priority: Major
> Labels: pull-request-available
>
> SCM already exposes a metric for the number of registered DNs (AllNodes), but
> we currently do not know how many DNs are actually readable from the
> perspective of container allocation and metadata operations.
> A datanode should be considered readable if not enough meta space, all other
> volumes do not have enough space for new container, and existing committed
> space is less than 256MB in all volumes.
> Add a new SCM metric that reports the Number of Readable Datanodes.
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