List of addNameNode() Examples

Examples of addNameNode()

org.apache.hadoop.hdfs.MiniAvatarCluster.addNameNode()
Add a namenode to cluster and start it. Configuration of datanodes in the cluster is refreshed to register with the new namenode. @return newly started namenode
org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()
Add a namenode to cluster and start it. Configuration of datanodes in the cluster is refreshed to register with the new namenode. @return newly started namenode

Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      LOG.info("dn bpos len (should be 3):" + bposs.length);
      Assert.assertEquals("should've registered with three namenodes", bposs.length,3);
      
      // change cluster id and another Namenode
      StartupOption.FORMAT.setClusterId("DifferentCID");
      cluster.addNameNode(conf, 9948);
      NameNode nn4 = cluster.getNameNode(3);
      assertNotNull("cannot create nn4", nn4);


      Thread.sleep(500);// lets wait for the registration to happen
      bposs = dn.getAllBpOs();

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

    // add a node
    try {
      cluster.waitActive();
      Assert.assertEquals("(1)Should be 2 namenodes", 2, cluster.getNumNameNodes());


      cluster.addNameNode(conf, 0);
      Assert.assertEquals("(1)Should be 3 namenodes", 3, cluster.getNumNameNodes());
    } catch (IOException ioe) {
      Assert.fail("Failed to add NN to cluster:" + StringUtils.stringifyException(ioe));
    } finally {
      cluster.shutdown();

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      Assert.assertNotNull(cluster);
      cluster.waitActive();
      Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());
    
      // add a node
      cluster.addNameNode(conf, 0);
      Assert.assertEquals("(2)Should be 2 namenodes", 2, cluster.getNumNameNodes());
    } catch (IOException ioe) {
      Assert.fail("Failed to add NN to cluster:" + StringUtils.stringifyException(ioe));
    } finally {
      cluster.shutdown();

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

    try {
      cluster.waitActive();
      Assert.assertNotNull(cluster);
      Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());


      cluster.addNameNode(conf, 9929);
      Assert.fail("shouldn't be able to add another NN to non federated cluster");
    } catch (IOException e) {
      // correct 
      Assert.assertTrue(e.getMessage().startsWith("cannot add namenode"));
      Assert.assertEquals("(3)Should be 1 namenodes", 1, cluster.getNumNameNodes());

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      BPOfferService [] bposs = dn.getAllBpOs(); 
      LOG.info("dn bpos len (should be 2):" + bposs.length);
      Assert.assertEquals("should've registered with two namenodes", bposs.length,2);
      
      // add another namenode
      cluster.addNameNode(conf, 9938);
      bposs = dn.getAllBpOs(); 
      LOG.info("dn bpos len (should be 3):" + bposs.length);
      Assert.assertEquals("should've registered with three namenodes", bposs.length,3);
      
      // change cluster id and another Namenode

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      LOG.info("dn bpos len (should be 3):" + bposs.length);
      Assert.assertEquals("should've registered with three namenodes", bposs.length,3);
      
      // change cluster id and another Namenode
      StartupOption.FORMAT.setClusterId("DifferentCID");
      cluster.addNameNode(conf, 9948);
      NameNode nn4 = cluster.getNameNode(3);
      assertNotNull("cannot create nn4", nn4);
      
      bposs = dn.getAllBpOs(); 
      LOG.info("dn bpos len (still should be 3):" + bposs.length);

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      .build();
    Assert.assertNotNull(cluster);
    Assert.assertEquals("(1)Should be 2 namenodes", 2, cluster.getNumNameNodes());
    
    // add a node
    cluster.addNameNode(conf, 0);
    Assert.assertEquals("(1)Should be 3 namenodes", 3, cluster.getNumNameNodes());
    cluster.shutdown();
        
    // 2. start with Federation flag set
    conf = new HdfsConfiguration();

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      .build();
    Assert.assertNotNull(cluster);
    Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());
    
    // add a node
    cluster.addNameNode(conf, 0);
    Assert.assertEquals("(2)Should be 2 namenodes", 2, cluster.getNumNameNodes());
    cluster.shutdown();


    // 3. start non-federated
    conf = new HdfsConfiguration();

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

    Assert.assertNotNull(cluster);
    Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());
    
    // add a node
    try {
      cluster.addNameNode(conf, 9929);
      Assert.fail("shouldn't be able to add another NN to non federated cluster");
    } catch (IOException e) {
      // correct 
      Assert.assertTrue(e.getMessage().startsWith("cannot add namenode"));
      Assert.assertEquals("(3)Should be 1 namenodes", 1, cluster.getNumNameNodes());

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.addNameNode()

      BPOfferService [] bposs = dn.getAllBpOs(); 
      LOG.info("dn bpos len (should be 2):" + bposs.length);
      Assert.assertEquals("should've registered with two namenodes", bposs.length,2);
      
      // add another namenode
      cluster.addNameNode(conf, 9938);
      bposs = dn.getAllBpOs(); 
      LOG.info("dn bpos len (should be 3):" + bposs.length);
      Assert.assertEquals("should've registered with three namenodes", bposs.length,3);
      
      // change cluster id and another Namenode

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