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https://issues.apache.org/jira/browse/HDDS-9884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang reassigned HDDS-9884:
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Assignee: Siyao Meng
> DataNode doesn't set proper DatanodeVersion when registering with SCM
> ---------------------------------------------------------------------
>
> Key: HDDS-9884
> URL: https://issues.apache.org/jira/browse/HDDS-9884
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Wei-Chiu Chuang
> Assignee: Siyao Meng
> Priority: Major
>
> DataNode has a version defined by DatanodeVersion. This is different from
> ContainerLayoutVersion,
> HDDSVolumeLayoutVersion or HDDSLayoutFeature.
>
> DatanodeVersion is supposed to be carrried inside DatanodeDetails
> (initialVersion and currentVersion) but they are not when Datanode register
> with SCM, so SCM doesn't know the DataNode version. Therefore, client doesn't
> know.
>
> This would need to be fixed to allow new clients talking to old DataNode
> without blowing up old DataNode. New clients should be able to tell the
> DataNodes are old and do not send new types of requests.
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