HDFS-5690. DataNode fails to start in secure mode when dfs.http.policy equals to HTTP_ONLY. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1553167 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java

@@ -305,12 +305,13 @@ public class HttpServer implements FilterContainer {
         }
       }
 
-      if (endpoints.size() == 0) {
+      if (endpoints.size() == 0 && connector == null) {
         throw new HadoopIllegalArgumentException("No endpoints specified");
       }
 
       if (hostName == null) {
-        hostName = endpoints.get(0).getHost();
+        hostName = endpoints.size() == 0 ? connector.getHost() : endpoints.get(
+            0).getHost();
       }
       
       if (this.conf == null) {

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java

@@ -66,6 +66,8 @@ import org.mockito.internal.util.reflection.Whitebox;
 import org.mortbay.jetty.Connector;
 import org.mortbay.util.ajax.JSON;
 
+import static org.mockito.Mockito.*;
+
 public class TestHttpServer extends HttpServerFunctionalTest {
   static final Log LOG = LogFactory.getLog(TestHttpServer.class);
   private static HttpServer server;
@@ -588,4 +590,15 @@ public class TestHttpServer extends HttpServerFunctionalTest {
     assertEquals(conn.getHeaderField("Expires"), conn.getHeaderField("Date"));
   }
 
+  /**
+   * HTTPServer.Builder should proceed if a external connector is available.
+   */
+  @Test
+  public void testHttpServerBuilderWithExternalConnector() throws Exception {
+    Connector c = mock(Connector.class);
+    doReturn("localhost").when(c).getHost();
+    HttpServer s = new HttpServer.Builder().setName("test").setConnector(c)
+        .build();
+    s.stop();
+  }
 }

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -830,6 +830,9 @@ Release 2.4.0 - UNRELEASED
     HDFS-5691. Fix typo in ShortCircuitLocalRead document.
     (Akira Ajisaka via suresh)
 
+    HDFS-5690. DataNode fails to start in secure mode when dfs.http.policy equals to 
+    HTTP_ONLY. (Haohui Mai via jing9)
+
 Release 2.3.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/SecureDataNodeStarter.java

@@ -87,6 +87,7 @@ public class SecureDataNodeStarter implements Daemon {
   public static SecureResources getSecureResources(Configuration conf)
       throws Exception {
     HttpConfig.Policy policy = DFSUtil.getHttpPolicy(conf);
+    boolean isSecure = UserGroupInformation.isSecurityEnabled();
 
     // Obtain secure port for data streaming to datanode
     InetSocketAddress streamingAddr  = DataNode.getStreamingAddr(conf);
@@ -106,6 +107,11 @@ public class SecureDataNodeStarter implements Daemon {
               + ss.getLocalPort());
     }
 
+    if (ss.getLocalPort() > 1023 && isSecure) {
+      throw new RuntimeException(
+        "Cannot start secure datanode with unprivileged RPC ports");
+    }
+
     System.err.println("Opened streaming server at " + streamingAddr);
 
     // Bind a port for the web server. The code intends to bind HTTP server to
@@ -126,9 +132,9 @@ public class SecureDataNodeStarter implements Daemon {
       System.err.println("Successfully obtained privileged resources (streaming port = "
           + ss + " ) (http listener port = " + listener.getConnection() +")");
 
-      if ((ss.getLocalPort() > 1023 || listener.getPort() > 1023) &&
-          UserGroupInformation.isSecurityEnabled()) {
-        throw new RuntimeException("Cannot start secure datanode with unprivileged ports");
+      if (listener.getPort() > 1023 && isSecure) {
+        throw new RuntimeException(
+            "Cannot start secure datanode with unprivileged HTTP ports");
       }
       System.err.println("Opened info server at " + infoSocAddr);
     }