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https://issues.apache.org/jira/browse/AMBARI-5618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Speidel resolved AMBARI-5618.
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Resolution: Fixed
merged to trunk and branch-1.6.0
> Validate that a host is only associated with a single host group when
> provisioning via a blueprint
> --------------------------------------------------------------------------------------------------
>
> Key: AMBARI-5618
> URL: https://issues.apache.org/jira/browse/AMBARI-5618
> Project: Ambari
> Issue Type: Improvement
> Reporter: John Speidel
> Assignee: John Speidel
> Labels: api, blueprints
> Fix For: 1.6.0
>
>
> When provisioning a cluster via a blueprint, there currently is a restriction
> that a host may only be associated with a single host group. If a user
> attempts to map a host to multiple host groups, strange errors are reported
> back to the user which do not explain the problem.
> This work will validate that a host is only mapped to one host group early
> and will provide a good error message to the user if there is an attempt to
> map multiple host groups to a host.
> {
> "status" : 400,
> "message" : "A host may only be mapped to a single host group at this time.
> The following hosts are mapped to more than one host group:
> [john2.novalocal]"
> }
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