[jira] [Created] (HDDS-17134) Document OM and SCM HA with more than 3 nodes

["Siyao Meng (Jira)" <ji...@apache.org>]

Siyao Meng created HDDS-17134:
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             Summary: Document OM and SCM HA with more than 3 nodes
                 Key: HDDS-17134
                 URL: https://issues.apache.org/jira/browse/HDDS-17134
             Project: Apache Ozone
          Issue Type: Sub-task
          Components: documentation
            Reporter: Siyao Meng


Update OM-HA.md, SCM-HA.md (and the zh versions) and the Listener OM design doc:
* A fault-tolerance table: 3 nodes tolerate 1 failure, 5 tolerate 2; an even count adds no tolerance.
* Correct listener-om.md: "A setup with 2 voting OMs will not work as Ratis requires an odd number of voting members". Two voters work, they just tolerate no failure.
* Adding OMs: every client configuration (clients, S3 Gateway, Recon, HttpFS) must include the new OMs before one can become leader (see the OM client failover sub-task).
* SCM: the extra datanode report load per added SCM, and the primordial SCM dependency in secure clusters.
* Expected leadership transfer latency (until the RatisHelper leader hint sub-task is fixed).



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