[jira] [Commented] (AMBARI-6453) Ambari Web UI should validate cluster name.

["Yusaku Sako (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-6453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057547#comment-14057547 ] 

Yusaku Sako commented on AMBARI-6453:
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To allow underscore as the cluster name is per design.
HDFS doesn't actually care about the cluster name used for Ambari purposes.
The document http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.2/bk_system-admin-guide/content/ch_hadoop-ha-3.html refers to the HDFS Nameservice ID (dfs.nameservices) that the user can edit when enabling NameNode HA via the wizard provided by Ambari.



> Ambari Web UI should validate cluster name.
> -------------------------------------------
>
>                 Key: AMBARI-6453
>                 URL: https://issues.apache.org/jira/browse/AMBARI-6453
>             Project: Ambari
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 1.6.1
>            Reporter: Pradeep Bhadani
>
> Ambari Web UI should validate the Hadoop cluster name.
> Best practices for choosing the cluster name is to avoid special character and white-spaces . These validation should be there at Ambari Web UI level.
> At present Ambari UI "text-box" for cluster name can accept special character like Underscore ( _ ).
> If you create Cluster Name having underscore( _ ) , you cannot enable HA. 
> Reference : http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.2/bk_system-admin-guide/content/ch_hadoop-ha-3.html
> Also , we cannot change the cluster name of existing hadoop cluster.
> Reference : https://issues.apache.org/jira/browse/AMBARI-4671
> Above ticket is OPEN.



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