[jira] [Updated] (AMBARI-24840) Change Hostname does not honor uppercase hosts

["Dmitry Lysnichenko (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-24840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitry Lysnichenko updated AMBARI-24840:
----------------------------------------
    Component/s: ambari-server

> Change Hostname does not honor uppercase hosts
> ----------------------------------------------
>
>                 Key: AMBARI-24840
>                 URL: https://issues.apache.org/jira/browse/AMBARI-24840
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Dmitry Lysnichenko
>            Assignee: Dmitry Lysnichenko
>            Priority: Critical
>
> During the [Ambari change hostname procedure|https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.0/bk_ambari-administration/content/ch_changing_host_names.html], hostnames in configs when they were all uppercase are not being replaced.  I think the code is converting hosts to all lowercase to do replacements.  See:
> https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/java/org/apache/ambari/server/update/HostUpdateHelper.java#L383-L393
> Appears to affect 2.6.1 and 2.6.2, but I think we can make the fix in 2.7.1 and hotfix older versions if need be.



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