Stephen O'Donnell created HDDS-12483:
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Summary: Quasi Closed Stuck should have 2 replicas of each origin
Key: HDDS-12483
URL: https://issues.apache.org/jira/browse/HDDS-12483
Project: Apache Ozone
Issue Type: Sub-task
Components: SCM
Reporter: Stephen O'Donnell
Assignee: Stephen O'Donnell
After the change to ensure Quasi Closed replicas only move to CLOSED when all 3
origin are present, some new edge cases appeared where some replicas do not get
full replication.
After some discussion we decided on the following for Quasi Closed Stuck
containers:
1. If there is only 1 origin available, create 3 copies of it.
2. If there are 2 or more origins, maintain 2 copies of each origin.
In the worse case, which is:
Origin: 1, bcsid:10, State: Quasi_Closed
Origin: 2, bcsid:10, State: Quasi_Closed
Origin: 3, bcsid:11, State: Unhealthy
This cannot move to closed as the highest BCSID is unhealthy, so 6 replicas
will be maintained in the system - 2 from each origin.
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