Ethan Rose created HDDS-5474:
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Summary: 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
Assignee: Ethan Rose
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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