YARN-2508. Cross Origin configuration parameters prefix are not honored (Mit Desai via jeagles)

(cherry picked from commit e6420fec0a)

hadoop-yarn-project/CHANGES.txt

@@ -158,6 +158,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2511. Allowed all origins by default when CrossOriginFilter is
     enabled. (Jonathan Eagles via zjshen)
 
+    YARN-2508. Cross Origin configuration parameters prefix are not honored
+    (Mit Desai via jeagles)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/timeline/webapp/CrossOriginFilterInitializer.java

@@ -18,6 +18,7 @@
 
 package org.apache.hadoop.yarn.server.timeline.webapp;
 
+import java.util.HashMap;
 import java.util.Map;
 
 import org.apache.hadoop.conf.Configuration;
@@ -37,6 +38,15 @@ public class CrossOriginFilterInitializer extends FilterInitializer {
   }
 
   static Map<String, String> getFilterParameters(Configuration conf) {
-    return conf.getValByRegex(PREFIX);
+    Map<String, String> filterParams =
+        new HashMap<String, String>();
+    for (Map.Entry<String, String> entry : conf.getValByRegex(PREFIX)
+        .entrySet()) {
+      String name = entry.getKey();
+      String value = entry.getValue();
+      name = name.substring(PREFIX.length());
+      filterParams.put(name, value);
+    }
+    return filterParams;
   }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/test/java/org/apache/hadoop/yarn/server/timeline/webapp/TestCrossOriginFilterInitializer.java

@@ -42,11 +42,8 @@ public class TestCrossOriginFilterInitializer {
         CrossOriginFilterInitializer.getFilterParameters(conf);
 
     // retrieve values
-    String rootvalue =
+    String rootvalue = filterParameters.get("rootparam");
-        filterParameters.get(CrossOriginFilterInitializer.PREFIX + "rootparam");
+    String nestedvalue = filterParameters.get("nested.param");
-    String nestedvalue =
-        filterParameters.get(CrossOriginFilterInitializer.PREFIX
-            + "nested.param");
     String outofscopeparam = filterParameters.get("outofscopeparam");
 
     // verify expected values are in place