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https://issues.apache.org/jira/browse/NIFI-5625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625264#comment-16625264
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ASF GitHub Bot commented on NIFI-5625:
--------------------------------------

Github user alopresto commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/3020#discussion_r219712916
  
    --- Diff: 
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/InvokeHTTP.java
 ---
    @@ -367,6 +372,7 @@
                         + "on the normal truststore hostname verifier. Only 
valid with SSL (HTTPS) connections.")
                 .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
                 .required(false)
    +            
.expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
    --- End diff --
    
    I'm not very comfortable with this field supporting EL either. Do you have 
a specific use case that requires it?


> Support variables  for the properties of HTTP processors
> --------------------------------------------------------
>
>                 Key: NIFI-5625
>                 URL: https://issues.apache.org/jira/browse/NIFI-5625
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Extensions, Variable Registry
>    Affects Versions: 1.7.1
>            Reporter: Kemix Koo
>            Priority: Minor
>
> When set some group (global) variables, some properties of HTTP processors 
> don't support the expressions. for example, USER and PASS, if don't set the 
> global variables, must change for each processors one by one. it's so 
> troublesomely. 



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