From 0cc6e039454127984a3aa5b2ba5d9151e4a72dd4 Mon Sep 17 00:00:00 2001
From: Sunil G <sunilg@apache.org>
Date: Tue, 18 Sep 2018 12:31:55 +0530
Subject: [PATCH] YARN-8726. [UI2] YARN UI2 is not accessible when config.env
 file failed to load. Contributed by Akhil PB.

---
 .../hadoop-yarn-ui/src/main/webapp/app/initializers/loader.js  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/initializers/loader.js b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/initializers/loader.js
index 96c8fcfff9..98d1348c84 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/initializers/loader.js
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/initializers/loader.js
@@ -88,6 +88,9 @@ function updateConfigs(application) {
   var hostname = window.location.hostname;
   var rmhost = hostname + (window.location.port ? ':' + window.location.port: '') + skipTrailingSlash(window.location.pathname);
 
+  window.ENV = window.ENV || {};
+  window.ENV.hosts = window.ENV.hosts || {};
+
   if(!ENV.hosts.rmWebAddress) {
     ENV.hosts.rmWebAddress = rmhost;
     ENV.hosts.protocolScheme = window.location.protocol;