Stephen O'Donnell created HDDS-7471:
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Summary: EC: Notify ReplicationManager when a heartbeat updates
datanode command counts
Key: HDDS-7471
URL: https://issues.apache.org/jira/browse/HDDS-7471
Project: Apache Ozone
Issue Type: Sub-task
Components: SCM
Reporter: Stephen O'Donnell
Assignee: Stephen O'Donnell
When a datanode heartbeat is processed, it updates the queued command counts on
the datanodes. Replication is going to use this information when assigning work
to datanodes, and if a datanode exceeds the load limit it will be excluded
until it has more capacity.
To allow RM to remove nodes from any exclude lists, we should fire a SCM event
when the counts are updated, as this will avoid RM polling frequently.
For now, the notification in RM does not do anything - we will add code which
uses it in future changes as we build out the load aware under / over
replication processing.
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