YARN-1868. YARN status web ui does not show correctly in IE 11. Contributed by Chuan Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1598686 13f79535-47bb-0310-9956-ffa450edef68

Author: cnauroth

hadoop-yarn-project/CHANGES.txt

@@ -171,6 +171,9 @@ Release 2.5.0 - UNRELEASED
     that both Timeline Server and client can access them. (Zhijie Shen via
     vinodkv)
 
+    YARN-1868. YARN status web ui does not show correctly in IE 11.
+    (Chuan Liu via cnauroth)
+
 Release 2.4.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/webapp/view/HtmlPage.java

@@ -79,7 +79,8 @@ protected HtmlPage(ViewContext ctx) {
   @Override
   public void render() {
     puts(DOCTYPE);
-    render(page().html().meta_http("Content-type", MimeType.HTML));
+    render(page().html().meta_http("X-UA-Compatible", "IE=8")
+        .meta_http("Content-type", MimeType.HTML));
     if (page().nestLevel() != 0) {
       throw new WebAppException("Error rendering page: nestLevel="+
                                 page().nestLevel());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/webapp/TestSubViews.java

@@ -70,6 +70,6 @@ public void render(Block html) {
     out.flush();
     verify(out).print("sub1 text");
     verify(out).print("sub2 text");
-    verify(out, times(15)).println(); // test inline transition across views
+    verify(out, times(16)).println(); // test inline transition across views
   }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/webapp/view/TestHtmlPage.java

@@ -22,11 +22,12 @@
 
 import java.io.PrintWriter;
 
+import org.apache.hadoop.yarn.webapp.MimeType;
 import org.apache.hadoop.yarn.webapp.WebAppException;
 import org.apache.hadoop.yarn.webapp.test.WebAppTests;
 import org.apache.hadoop.yarn.webapp.view.HtmlPage;
-
 import org.junit.Test;
+
 import static org.mockito.Mockito.*;
 
 public class TestHtmlPage {
@@ -53,6 +54,12 @@ public void render(Page.HTML<_> html) {
     Injector injector = WebAppTests.testPage(TestView.class);
     PrintWriter out = injector.getInstance(PrintWriter.class);
 
+    // Verify the HTML page has correct meta tags in the header
+    verify(out).print(" http-equiv=\"X-UA-Compatible\"");
+    verify(out).print(" content=\"IE=8\"");
+    verify(out).print(" http-equiv=\"Content-type\"");
+    verify(out).print(String.format(" content=\"%s\"", MimeType.HTML));
+
     verify(out).print("test");
     verify(out).print(" id=\"testid\"");
     verify(out).print("test note");