Ethan Rose created HDDS-16798:
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Summary: Stale or Dead Datanodes whose software is not upgraded
may still communicate with a finalized SCM
Key: HDDS-16798
URL: https://issues.apache.org/jira/browse/HDDS-16798
Project: Apache Ozone
Issue Type: Bug
Reporter: Siyao Meng
Only all HEALTHY nodes need to be upgraded for SCM start finalization, but once
SCM finalizes, it should not allow communication with nodes in the older
software. However this is checked at the time of registration and STALE and
DEAD nodes can heartbeat back to SCM without reregistering. This should be
fixable in the general case by sending a reregister command in response to any
node that heartbeats a software version less than SCM when it is finalized
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