MAPREDUCE-6382. Don't escape HTML links in Diagnostics in JHS job overview. (Siqi Li via gera)

(cherry picked from commit e8302071ff16247a3d0cfc2dcca02da1bbf4db18)

hadoop-mapreduce-project/CHANGES.txt

@@ -186,6 +186,9 @@ Release 2.8.0 - UNRELEASED
     high. Error is: "error=7, Argument list too long at if number of input
     file is high" (wilfreds via rkanter)
 
+    MAPREDUCE-6382. Don't escape HTML links in Diagnostics in JHS job overview.
+    (Siqi Li via gera)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsJobBlock.java

@@ -101,7 +101,7 @@ public class HsJobBlock extends HtmlBlock {
       for(String diag: diagnostics) {
         b.append(addTaskLinks(diag));
       }
-      infoBlock._("Diagnostics:", b.toString());
+      infoBlock._r("Diagnostics:", b.toString());
     }
 
     if(job.getNumMaps() > 0) {