HDFS-7808. Remove obsolete -ns options in in DFSHAAdmin.java. Contributed by Arshad Mohammad.

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

@@ -682,6 +682,9 @@ Release 2.7.0 - UNRELEASED
     HDFS-6662. WebHDFS cannot open a file if its path contains "%".
     (Gerson Carlos via wheat9)
 
+    HDFS-7808. Remove obsolete -ns options in in DFSHAAdmin.java.
+    (Arshad Mohammad via wheat9)
+
     BREAKDOWN OF HDFS-7584 SUBTASKS AND RELATED JIRAS
 
       HDFS-7720. Quota by Storage Type API, tools and ClientNameNode

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSHAAdmin.java

@@ -18,7 +18,6 @@
 package org.apache.hadoop.hdfs.tools;
 
 import java.io.PrintStream;
-import java.util.Arrays;
 import java.util.Collection;
 
 import org.apache.commons.logging.Log;
@@ -98,25 +97,6 @@ public class DFSHAAdmin extends HAAdmin {
       printUsage(errOut);
       return -1;
     }
-
-    int i = 0;
-    String cmd = argv[i++];
-
-    if ("-ns".equals(cmd)) {
-      if (i == argv.length) {
-        errOut.println("Missing nameservice ID");
-        printUsage(errOut);
-        return -1;
-      }
-      nameserviceId = argv[i++];
-      if (i >= argv.length) {
-        errOut.println("Missing command");
-        printUsage(errOut);
-        return -1;
-      }
-      argv = Arrays.copyOfRange(argv, i, argv.length);
-    }
-    
     return super.runCmd(argv);
   }
   

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSHAAdmin.java

@@ -146,17 +146,6 @@ public class TestDFSHAAdmin {
     }
   }
   
-  @Test
-  public void testNameserviceOption() throws Exception {
-    assertEquals(-1, runTool("-ns"));
-    assertOutputContains("Missing nameservice ID");
-    assertEquals(-1, runTool("-ns", "ns1"));
-    assertOutputContains("Missing command");
-    // "ns1" isn't defined but we check this lazily and help doesn't use the ns
-    assertEquals(0, runTool("-ns", "ns1", "-help", "transitionToActive"));
-    assertOutputContains("Transitions the service into Active");
-  }
-
   @Test
   public void testNamenodeResolution() throws Exception {
     Mockito.doReturn(STANDBY_READY_RESULT).when(mockProtocol).getServiceStatus();
@@ -278,15 +267,6 @@ public class TestDFSHAAdmin {
     assertEquals(0, runTool("-failover", "nn1", "nn2"));
   }
 
-  @Test
-  public void testFailoverWithFencerAndNameservice() throws Exception {
-    Mockito.doReturn(STANDBY_READY_RESULT).when(mockProtocol).getServiceStatus();
-    HdfsConfiguration conf = getHAConf();
-    conf.set(DFSConfigKeys.DFS_HA_FENCE_METHODS_KEY, getFencerTrueCommand());
-    tool.setConf(conf);
-    assertEquals(0, runTool("-ns", "ns1", "-failover", "nn1", "nn2"));
-  }
-
   @Test
   public void testFailoverWithFencerConfiguredAndForce() throws Exception {
     Mockito.doReturn(STANDBY_READY_RESULT).when(mockProtocol).getServiceStatus();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSHAAdminMiniCluster.java

@@ -156,9 +156,6 @@ public class TestDFSHAAdminMiniCluster {
     assertEquals(0, runTool("-transitionToActive", "nn1"));
     assertEquals(0, runTool("-failover", "nn1", "nn2"));
     
-    // Test failover with fencer and nameservice
-    assertEquals(0, runTool("-ns", "minidfs-ns", "-failover", "nn2", "nn1"));
-
     // Fencer has not run yet, since none of the above required fencing 
     assertEquals("", Files.toString(tmpFile, Charsets.UTF_8));