Aswin Shakil created HDDS-14714:
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Summary: Support keeping a configurable number of extra copies of
quasi-closed containers
Key: HDDS-14714
URL: https://issues.apache.org/jira/browse/HDDS-14714
Project: Apache Ozone
Issue Type: Improvement
Reporter: Aswin Shakil
Assignee: Aswin Shakil
For diverged quasi-closed stuck containers, HDDS-12483 keeps two copies of each
origin. This change makes the replica counts configurable, so the origin with
the highest BCSID can receive more copies than the others for better fault
tolerance.The best origin is defined as the one with the highest BCSID among
healthy replicas. If the highest BCSID replica is unhealthy, we fall back to
the next highest healthy one. If multiple origins tie for the highest healthy
BCSID, all of them are treated as best. Two new reconfigurable config keys are
introduced:
* hdds.scm.replication.quasi.closed.stuck.best.origin.copies (default: 3)
* hdds.scm.replication.quasi.closed.stuck.other.origin.copies (default: 2)
With the defaults, the best origin gets 3 copies and all other origins get 2.
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