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https://issues.apache.org/jira/browse/AMBARI-8588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14238154#comment-14238154
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Aleksandr Kovalenko commented on AMBARI-8588:
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+1 for the patch
> Ambari should not support NN HA in HDP 1.3.x
> --------------------------------------------
>
> Key: AMBARI-8588
> URL: https://issues.apache.org/jira/browse/AMBARI-8588
> Project: Ambari
> Issue Type: Bug
> Components: ambari-web
> Affects Versions: 1.6.1
> Reporter: Antonenko Alexander
> Assignee: Antonenko Alexander
> Priority: Blocker
> Fix For: 2.0.0
>
> Attachments: AMBARI-8588.patch
>
>
> PROBLEM: On HDP 1.3 installed by Ambari 1.6.1 after upgrade to Ambari 1.7,
> Ambari presenting option to enable HA for the NameNode. But HDP 1.3 is not
> supporting NN HA.
> If customer, mislead by Ambari will try in enable HA, will get the following:
> Ambari instructing:
> Login to the NameNode host hdp2-2-1.lfedotov.com.
> Put the NameNode in Safe Mode (read-only mode):
> sudo su -l hdfs -c 'hdfs dfsadmin -safemode enter'
> When customer logged in to namenode machine and try to execute demanded
> command he got the following:
> [root@HDP2-2-1 ~]# sudo su -l hdfs -c 'hdfs dfsadmin -safemode enter'
> -bash: hdfs: command not found
> [root@HDP2-2-1 ~]#
> Because "hdfs" command is not exists in HDP 1.3.
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