Stephen O'Donnell created HDDS-9902:
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Summary: Decommission: Admin monitor should call
RM.checkContainerState to check for under-replication
Key: HDDS-9902
URL: https://issues.apache.org/jira/browse/HDDS-9902
Project: Apache Ozone
Issue Type: Improvement
Components: SCM
Reporter: Stephen O'Donnell
Assignee: Stephen O'Donnell
The logic in ReplicationManager is increasingly complex due to various edge
cases around unhealthy and quasi-closed containers, and the differences between
EC and Ratis.
It therefore makes sense for DatanodeAdminMonitor to call the new API
replicationManager.checkContainerState and then check the report for
under-replicated, rather than using the ReplicaCount objects.
In making this change, I needed to make a change in the EC under-replication
handling where the container is unhealthy / unrecoverable but also has
decommissioning indexes, as it was not being reported as under-replicated
previously.
I also refactored the decommission monitor slightly to remove references to
containers as "unhealthy" when they are really unclosed - renaming the metrics
and variables to unClosed.
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