YARN-1898. Made Standby RM links conf, stacks, logLevel, metrics, jmx, logs and static not be redirected to Active RM. Contributed by Xuan Gong.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1583833 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -75,6 +75,9 @@ Release 2.4.1 - UNRELEASED
 
   BUG FIXES
 
+    YARN-1898. Made Standby RM links conf, stacks, logLevel, metrics, jmx, logs
+    and static not be redirected to Active RM. (Xuan Gong via zjshen)
+
 Release 2.4.0 - 2014-04-07 
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java

@@ -270,9 +270,33 @@ public class TestRMFailover extends ClientBaseWithFixes {
     String header = getHeader("Refresh", rm2Url);
     assertTrue(header.contains("; url=" + rm1Url));
 
+    // standby RM links /conf, /stacks, /logLevel, /metrics, /jmx,
+    // /static, /logs, /cluster/cluster as well as webService
+    // /ws/v1/cluster/info should not be redirected to active RM
     header = getHeader("Refresh", rm2Url + "/cluster/cluster");
     assertEquals(null, header);
 
+    header = getHeader("Refresh", rm2Url + "/conf");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/stacks");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/logLevel");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/metrics");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/jmx");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/static");
+    assertEquals(null, header);
+
+    header = getHeader("Refresh", rm2Url + "/logs");
+    assertEquals(null, header);
+
     header = getHeader("Refresh", rm2Url + "/ws/v1/cluster/info");
     assertEquals(null, header);
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebAppFilter.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.yarn.server.resourcemanager.webapp;
 
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.util.Set;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
@@ -30,6 +31,7 @@ import javax.servlet.http.HttpServletResponse;
 
 import org.apache.hadoop.http.HtmlQuoting;
 
+import com.google.common.collect.Sets;
 import com.google.inject.Injector;
 import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
 
@@ -42,6 +44,10 @@ public class RMWebAppFilter extends GuiceContainer {
    */
   private static final long serialVersionUID = 1L;
 
+  // define a set of URIs which do not need to do redirection
+  private static final Set<String> NON_REDIRECTED_URIS = Sets.newHashSet(
+      "/conf", "/stacks", "/logLevel", "/metrics", "/jmx", "/logs");
+
   @Inject
   public RMWebAppFilter(Injector injector) {
     super(injector);
@@ -61,8 +67,7 @@ public class RMWebAppFilter extends GuiceContainer {
     RMWebApp rmWebApp = injector.getInstance(RMWebApp.class);
     rmWebApp.checkIfStandbyRM();
     if (rmWebApp.isStandby()
-        && !uri.equals("/" + rmWebApp.wsName() + "/v1/cluster/info")
+        && shouldRedirect(rmWebApp, uri)) {
-        && !uri.equals("/" + rmWebApp.name() + "/cluster")) {
       String redirectPath = rmWebApp.getRedirectPath() + uri;
 
       if (redirectPath != null && !redirectPath.isEmpty()) {
@@ -80,4 +85,9 @@ public class RMWebAppFilter extends GuiceContainer {
 
   }
 
+  private boolean shouldRedirect(RMWebApp rmWebApp, String uri) {
+    return !uri.equals("/" + rmWebApp.wsName() + "/v1/cluster/info")
+        && !uri.equals("/" + rmWebApp.name() + "/cluster")
+        && !NON_REDIRECTED_URIS.contains(uri);
+  }
 }