HDFS-3036. Remove unused method DFSUtil#isDefaultNamenodeAddress. Contributed by Aaron T. Myers.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1295961 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -68,6 +68,8 @@ Trunk (unreleased changes)
     HDFS-3030. Remove getProtocolVersion and getProtocolSignature from translators.
     (jitendra)
 
+    HDFS-3036. Remove unused method DFSUtil#isDefaultNamenodeAddress. (atm)
+
   OPTIMIZATIONS
 
     HDFS-2477. Optimize computing the diff between a block report and the

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java

@@ -446,8 +446,7 @@ public class DFSUtil {
    * namenode, this method returns the corresponding nameservice ID,
    * by doing a reverse lookup on the list of nameservices until it
    * finds a match.
-   * If null is returned, client should try {@link #isDefaultNamenodeAddress}
-   * to check pre-Federated configurations.
+   * 
    * Since the process of resolving URIs to Addresses is slightly expensive,
    * this utility method should not be used in performance-critical routines.
    * 
@@ -470,7 +469,6 @@ public class DFSUtil {
 
     // Configuration with a single namenode and no nameserviceId
     if (nameserviceIds == null || nameserviceIds.isEmpty()) {
-      // client should try {@link isDefaultNamenodeAddress} instead
       return null;
     }
     // Get the candidateAddresses for all the configured nameServiceIds
@@ -484,7 +482,6 @@ public class DFSUtil {
       }
     }
     // didn't find a match
-    // client should try {@link isDefaultNamenodeAddress} instead
     return null;
   }
 
@@ -527,38 +524,6 @@ public class DFSUtil {
     return httpAddress;
   }
   
-  /**
-   * Given the InetSocketAddress for any configured communication with a 
-   * namenode, this method determines whether it is the configured
-   * communication channel for the "default" namenode.
-   * It does a reverse lookup on the list of default communication parameters
-   * to see if the given address matches any of them.
-   * Since the process of resolving URIs to Addresses is slightly expensive,
-   * this utility method should not be used in performance-critical routines.
-   * 
-   * @param conf - configuration
-   * @param address - InetSocketAddress for configured communication with NN.
-   *     Configured addresses are typically given as URIs, but we may have to
-   *     compare against a URI typed in by a human, or the server name may be
-   *     aliased, so we compare unambiguous InetSocketAddresses instead of just
-   *     comparing URI substrings.
-   * @param keys - list of configured communication parameters that should
-   *     be checked for matches.  For example, to compare against RPC addresses,
-   *     provide the list DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY,
-   *     DFS_NAMENODE_RPC_ADDRESS_KEY
-   * @return - boolean confirmation if matched generic parameter
-   */
-  public static boolean isDefaultNamenodeAddress(Configuration conf,
-      InetSocketAddress address, String... keys) {
-    for (String key : keys) {
-      String candidateAddress = conf.get(key);
-      if (candidateAddress != null
-          && address.equals(NetUtils.createSocketAddr(candidateAddress)))
-        return true;
-    }
-    return false;
-  }
-  
   /**
    * @return key specific to a nameserviceId from a generic key
    */

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUtil.java

@@ -208,27 +208,6 @@ public class TestDFSUtil {
     assertEquals(expectedNameServiceId, nameserviceId);
   }
 
-  /**
-   * Test for
-   * {@link DFSUtil#isDefaultNamenodeAddress(Configuration, InetSocketAddress, String...)}
-   */
-  @Test
-  public void testSingleNamenode() {
-    HdfsConfiguration conf = new HdfsConfiguration();
-    final String DEFAULT_ADDRESS = "localhost:9000";
-    final String NN2_ADDRESS = "localhost:9001";
-    conf.set(DFS_NAMENODE_RPC_ADDRESS_KEY, DEFAULT_ADDRESS);
-
-    InetSocketAddress testAddress1 = NetUtils.createSocketAddr(DEFAULT_ADDRESS);
-    boolean isDefault = DFSUtil.isDefaultNamenodeAddress(conf, testAddress1,
-        DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, DFS_NAMENODE_RPC_ADDRESS_KEY);
-    assertTrue(isDefault);
-    InetSocketAddress testAddress2 = NetUtils.createSocketAddr(NN2_ADDRESS);
-    isDefault = DFSUtil.isDefaultNamenodeAddress(conf, testAddress2,
-        DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, DFS_NAMENODE_RPC_ADDRESS_KEY);
-    assertFalse(isDefault);
-  }
-
   /** Tests to ensure default namenode is used as fallback */
   @Test
   public void testDefaultNamenode() throws IOException {