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https://issues.apache.org/jira/browse/AMBARI-13903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15035118#comment-15035118
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Nathan Falk commented on AMBARI-13903:
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It took a while before I had a chance to try this out.
No, <empty-value-valid>true</empty-value-valid> does not allow a value to be
blank for an "advanced" configuration, such as you would find for any custom
service. Ambari still flags the field as "Input required" and does not let you
continue.
I suspect that an empty value works for hadoop.security.key.provider.path
because it is defined in site_properties.js:
{
"id": "site property",
"name": "hadoop.security.key.provider.path",
"displayName": "hadoop.security.key.provider.path",
"defaultValue": "",
"isRequired": false,
"category": "Advanced core-site",
"serviceName": "HDFS",
"filename": "core-site.xml"
},
What I'm looking for is a way to specify the equivalent of "isRequired": false
in the xml and not have to put it in site_properties.js.
> Need a way to set "advanced" properties as optional (isRequired=false)
> ----------------------------------------------------------------------
>
> Key: AMBARI-13903
> URL: https://issues.apache.org/jira/browse/AMBARI-13903
> Project: Ambari
> Issue Type: Improvement
> Components: ambari-web
> Affects Versions: 2.1.0
> Reporter: Nathan Falk
>
> The only way to let a configuration property be optional seems to be to
> define it in site_properties.js. It should be possible to specify
> required=false for any property in any xml file in the stack.
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