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https://issues.apache.org/jira/browse/HBASE-8328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell resolved HBASE-8328.
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Resolution: Won't Fix
> The servername regex in HServerInfo accepts invalid hostnames
> -------------------------------------------------------------
>
> Key: HBASE-8328
> URL: https://issues.apache.org/jira/browse/HBASE-8328
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.89-fb
> Reporter: Gaurav Menghani
> Priority: Major
>
> The HServerInfo regex matches invalid hostnames like " " (a single space),
> "!#$!", etc. It should be made more strict to follow the DNS RFC more closely.
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