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https://issues.apache.org/jira/browse/HELIX-825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17210190#comment-17210190
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Felipe Pereira commented on HELIX-825:
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Although removing the slashes from the cluster name may solve the problem, it
is really hard to find that out, once there are no logs for that.
> Inconsistent ExternalView when using slashes in the Cluster Name
> ----------------------------------------------------------------
>
> Key: HELIX-825
> URL: https://issues.apache.org/jira/browse/HELIX-825
> Project: Apache Helix
> Issue Type: Bug
> Components: helix-core
> Reporter: Felipe Pereira
> Priority: Critical
> Attachments: image-2020-10-08-14-48-40-893.png
>
>
> While upgrading helix from 0.6.7 to 1.0.1 we noticed the use of slashes in
> the cluster name (e.g. *group/my-cluster*) breaks Helix initialization
> (below, the ExternalView showing no online instances):
> !image-2020-10-08-14-48-40-893.png|width=269,height=239!
> removing the slashes from the cluster name solves the problem.
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