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https://issues.apache.org/jira/browse/HDDS-5474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ethan Rose updated HDDS-5474:
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Target Version/s: 1.3.0
> Stop reads and writes on datanodes during major upgrades
> --------------------------------------------------------
>
> Key: HDDS-5474
> URL: https://issues.apache.org/jira/browse/HDDS-5474
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Ethan Rose
> Priority: Major
>
> Some backwards incompatible changes like HDDS-4866 may need to reformat
> containers or volumes during upgrade. We currently cannot safely do this
> during finalize because we do not block reads on the datanode while it is
> finalizing, only writes. This jira is to investigate having an option to
> block writes on datanodes during finalization of more invasive upgrade
> actions, while leaving the normal read only requirement for minor upgrade
> changes.
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