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

    https://github.com/apache/drill/pull/1153#discussion_r173371697
  
    --- Diff: exec/java-exec/src/main/resources/rest/index.ftl ---
    @@ -269,9 +277,12 @@
                                   }
                             });
           }
    -      <#if model.shouldShowAdminInfo() || !model.isAuthEnabled() >
    -          function shutdown(address,button) {
    -              url = "http://"+address+":"+portNum+"/gracefulShutdown";;
    +       <#if model.shouldShowAdminInfo() || !model.isAuthEnabled()>
    +          function shutdown(button) {
    +              var protocol = location.protocol;
    +              var host = location.host;
    +              var requestPath = "/gracefulShutdown";
    +              var url = protocol+host+requestPath;
    --- End diff --
    
    How about refactoring above lines into separate function 
`getRequestUrl(requestPath)` and call that from both the methods (`shutdown` & 
`fillQueryCount`)
    
    ```
    function getRequestUrl(requestPath) {
        var protocol = location.protocol;
        var host = location.host;
        var url = protocol + host + requestPath;
        return url;
    }
    ```


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