Ethan Rose created HDDS-16044:
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Summary: Do not use the unified versioning framework until ZDU is
finalized
Key: HDDS-16044
URL: https://issues.apache.org/jira/browse/HDDS-16044
Project: Apache Ozone
Issue Type: Improvement
Reporter: Ethan Rose
Assignee: Ethan Rose
ZDU is the first version that supports the unified versioning framework, where
network and disk compatibility are tracked with the same version. Therefore, we
cannot use this framework before ZDU is finalized. The existing
{{VersionManager}} already handles this for disk compatibility. It will read
from the old layout feature enums until ZDU is finalized. We need similar
handling for the component version sent over the network to clients. We cannot
send the unified version framework's apparent version to clients until ZDU is
finalized, otherwise we may be sending them a layout feature when they are
expecting a component version. When ZDU is pre-finalized, we must send the last
component version before ZDU to clients. Finalizing ZDU moves both version
systems ahead to the unified one that starts with ZDU, where one apparent
version can be shared over both disk and network.
HDDS-15641 will handle this for SCM/Datanodes on the write path. This Jira will
handle it for the remaining cases on the HDDS read path and OM
{{getServiceInfo}} call.
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