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https://issues.apache.org/jira/browse/HDDS-13828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18032420#comment-18032420
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Ivan Andika commented on HDDS-13828:
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> Is this requirement only for intermediate scenarios?
That is currently our use case, there might be more cases in the future (e.g. 5
OM is still valid since it's odd).
> The idea is simply to add a validation initially for the usual requirement
>for the number of OMs or SCMs. It won't be a continuous restriction. If there
>is no special benefit to adding this, I'm good with not implementing the jira.
I think we can start by adding some logs when the detected number of OMs and
SCMs are not odd. The main point is that we should not disallow user to create
a OM/SCM service with even numbers of nodes. IMO, Ozone admin should generally
be well-aware that setting even number of nodes are not recommended.
> Validate number of replicas for om and scm
> ------------------------------------------
>
> Key: HDDS-13828
> URL: https://issues.apache.org/jira/browse/HDDS-13828
> Project: Apache Ozone
> Issue Type: Improvement
> Components: Helm
> Reporter: Tejaskriya
> Priority: Major
>
> The number of OMs and SCMs should either be 1 or 3 (as tested, for non-HA and
> HA respectively). This restriction isn't present currently in the helm chart
> deployment of ozone.
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