Package org.apache.hadoop.hdfs.server.namenode

Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem$MisReplicatedBlocksWorker

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    //At most 4 nodes will be decommissioned
    startCluster(1, 7, conf);
       
    FileSystem fileSys = cluster.getFileSystem(0);
    FSNamesystem ns = cluster.getNamesystem(0);
   
    String openFile = "/testDecommissionWithOpenfile.dat";
          
    writeFile(fileSys, new Path(openFile), (short)3);  
    // make sure the file was open for write
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    try {
      cluster = new MiniDFSCluster.Builder(conf).build();
      cluster.waitActive();

      FSNamesystem fsn = cluster.getNameNode().namesystem;

      MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
      ObjectName mxbeanName = new ObjectName(
          "Hadoop:service=NameNode,name=NameNodeInfo");
      // get attribute "ClusterId"
      String clusterId = (String) mbs.getAttribute(mxbeanName, "ClusterId");
      Assert.assertEquals(fsn.getClusterId(), clusterId);
      // get attribute "BlockPoolId"
      String blockpoolId = (String) mbs.getAttribute(mxbeanName,
          "BlockPoolId");
      Assert.assertEquals(fsn.getBlockPoolId(), blockpoolId);
      // get attribute "Version"
      String version = (String) mbs.getAttribute(mxbeanName, "Version");
      Assert.assertEquals(fsn.getVersion(), version);
      Assert.assertTrue(version.equals(VersionInfo.getVersion()
          + ", r" + VersionInfo.getRevision()));
      // get attribute "Used"
      Long used = (Long) mbs.getAttribute(mxbeanName, "Used");
      Assert.assertEquals(fsn.getUsed(), used.longValue());
      // get attribute "Total"
      Long total = (Long) mbs.getAttribute(mxbeanName, "Total");
      Assert.assertEquals(fsn.getTotal(), total.longValue());
      // get attribute "safemode"
      String safemode = (String) mbs.getAttribute(mxbeanName, "Safemode");
      Assert.assertEquals(fsn.getSafemode(), safemode);
      // get attribute nondfs
      Long nondfs = (Long) (mbs.getAttribute(mxbeanName, "NonDfsUsedSpace"));
      Assert.assertEquals(fsn.getNonDfsUsedSpace(), nondfs.longValue());
      // get attribute percentremaining
      Float percentremaining = (Float) (mbs.getAttribute(mxbeanName,
          "PercentRemaining"));
      Assert.assertEquals(fsn.getPercentRemaining(), percentremaining
          .floatValue());
      // get attribute Totalblocks
      Long totalblocks = (Long) (mbs.getAttribute(mxbeanName, "TotalBlocks"));
      Assert.assertEquals(fsn.getTotalBlocks(), totalblocks.longValue());
      // get attribute alivenodeinfo
      String alivenodeinfo = (String) (mbs.getAttribute(mxbeanName,
          "LiveNodes"));
      Assert.assertEquals(fsn.getLiveNodes(), alivenodeinfo);
      // get attribute deadnodeinfo
      String deadnodeinfo = (String) (mbs.getAttribute(mxbeanName,
          "DeadNodes"));
      Assert.assertEquals(fsn.getDeadNodes(), deadnodeinfo);
    } finally {
      if (cluster != null) {
        cluster.shutdown();
      }
    }
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    }
    assertEquals("Num physical blocks should match num stored in the NN",
        totalReal, totalNN);

    // now check the number of under-replicated blocks
    FSNamesystem fsn = cluster.getNamesystem();
    // force update of all the metric counts by calling computeDatanodeWork
    BlockManagerTestUtil.getComputedDatanodeWork(fsn.getBlockManager());
    // get all the counts
    long underRepl = fsn.getUnderReplicatedBlocks();
    long pendRepl = fsn.getPendingReplicationBlocks();
    long totalRepl = underRepl + pendRepl;
    System.out.println("underreplicated after = "+ underRepl +
        " and pending repl ="  + pendRepl + "; total underRepl = " + totalRepl);

    System.out.println("total blocks (real and replicating):" +
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    try {
      cluster = new MiniDFSCluster(conf, 1, true, null);
      cluster.waitActive();

      FSNamesystem fsn = cluster.getNameNode().namesystem;

      MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
      ObjectName mxbeanName = new ObjectName(
        "Hadoop:service=NameNode,name=NameNodeInfo");
      // get attribute "HostName"
      String hostname = (String) mbs.getAttribute(mxbeanName, "HostName");
      Assert.assertEquals(fsn.getHostName(), hostname);
      // get attribute "Version"
      String version = (String) mbs.getAttribute(mxbeanName, "Version");
      Assert.assertEquals(fsn.getVersion(), version);
      Assert.assertTrue(version.equals(VersionInfo.getVersion()
              + ", r" + VersionInfo.getRevision()));
      // get attribute "Used"
      Long used = (Long) mbs.getAttribute(mxbeanName, "Used");
      Assert.assertEquals(fsn.getUsed(), used.longValue());
      // get attribute "Total"
      Long total = (Long) mbs.getAttribute(mxbeanName, "Total");
      Assert.assertEquals(fsn.getTotal(), total.longValue());
      // get attribute "safemode"
      String safemode = (String) mbs.getAttribute(mxbeanName, "Safemode");
      Assert.assertEquals(fsn.getSafemode(), safemode);
      // get attribute nondfs
      Long nondfs = (Long) (mbs.getAttribute(mxbeanName, "NonDfsUsedSpace"));
      Assert.assertEquals(fsn.getNonDfsUsedSpace(), nondfs.longValue());
      // get attribute percentremaining
      Float percentremaining = (Float) (mbs.getAttribute(mxbeanName,
          "PercentRemaining"));
      Assert.assertEquals(fsn.getPercentRemaining(), percentremaining
          .floatValue());
      // get attribute Totalblocks
      Long totalblocks = (Long) (mbs.getAttribute(mxbeanName, "TotalBlocks"));
      Assert.assertEquals(fsn.getTotalBlocks(), totalblocks.longValue());
      // get attribute alivenodeinfo
      String alivenodeinfo = (String) (mbs.getAttribute(mxbeanName,
          "LiveNodes"));
      Assert.assertEquals(fsn.getLiveNodes(), alivenodeinfo);
      // get attribute deadnodeinfo
      String deadnodeinfo = (String) (mbs.getAttribute(mxbeanName,
          "DeadNodes"));
      Assert.assertEquals(fsn.getDeadNodes(), deadnodeinfo);
      // get attribute NameDirStatuses
      String nameDirStatuses = (String) (mbs.getAttribute(mxbeanName,
          "NameDirStatuses"));
      Assert.assertEquals(fsn.getNameDirStatuses(), nameDirStatuses);
      Map<String, Map<String, String>> statusMap =
        (Map<String, Map<String, String>>) JSON.parse(nameDirStatuses);
      Collection<File> nameDirs = cluster.getNameDirs();
      for (File nameDir : nameDirs) {
        System.out.println("Checking for the presence of " + nameDir +
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    Path file2 = new Path("decommission1.dat");
    FSDataOutputStream st1 = writeIncompleteFile(fileSys, file2, replicas);
    Thread.sleep(5000);

    FSNamesystem fsn = cluster.getNameNode().getNamesystem();
    for (int iteration = 0; iteration < numDatanodes; iteration++) {
      String downnode = decommissionNode(fsn, conf, client, localFileSys,
          iteration);
      decommissionedNodes.add(downnode);
      Thread.sleep(5000);
      ArrayList<DatanodeDescriptor> decommissioningNodes = fsn
          .getDecommissioningNodes();
      if (iteration == 0) {
        assertEquals(decommissioningNodes.size(), 1);
        DatanodeDescriptor decommNode = decommissioningNodes.get(0);
        checkDecommissionStatus(decommNode, 4, 0, 2);
      } else {
        assertEquals(decommissioningNodes.size(), 2);
        DatanodeDescriptor decommNode1 = decommissioningNodes.get(0);
        DatanodeDescriptor decommNode2 = decommissioningNodes.get(1);
        checkDecommissionStatus(decommNode1, 4, 4, 2);
        checkDecommissionStatus(decommNode2, 4, 4, 2);
      }
    }
    // Call refreshNodes on FSNamesystem with empty exclude file.
    // This will remove the datanodes from decommissioning list and
    // make them available again.
    writeConfigFile(localFileSys, excludeFile, null);
    fsn.refreshNodes(conf);
    st1.close();
    cleanupFile(fileSys, file1);
    cleanupFile(fileSys, file2);
    cleanupFile(localFileSys, dir);
  }
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    try {
      cluster = new MiniDFSCluster(conf, 1, true, null);
      cluster.waitActive();
     
      FSNamesystem namesystem = cluster.getNameNode().namesystem;
     
      // Ensure the data reported for each data node is right
      ArrayList<DatanodeDescriptor> live = new ArrayList<DatanodeDescriptor>();
      ArrayList<DatanodeDescriptor> dead = new ArrayList<DatanodeDescriptor>();
      namesystem.DFSNodesStatus(live, dead);
     
      assertTrue(live.size() == 1);
     
      long used, remaining, configCapacity, nonDFSUsed;
      float percentUsed, percentRemaining;
     
      for (final DatanodeDescriptor datanode : live) {
        used = datanode.getDfsUsed();
        remaining = datanode.getRemaining();
        nonDFSUsed = datanode.getNonDfsUsed();
        configCapacity = datanode.getCapacity();
        percentUsed = datanode.getDfsUsedPercent();
        percentRemaining = datanode.getRemainingPercent();
       
        LOG.info("Datanode configCapacity " + configCapacity
            + " used " + used + " non DFS used " + nonDFSUsed
            + " remaining " + remaining + " perentUsed " + percentUsed
            + " percentRemaining " + percentRemaining);
       
        assertTrue(configCapacity == (used + remaining + nonDFSUsed));
        assertTrue(percentUsed == ((100.0f * (float)used)/(float)configCapacity));
        assertTrue(percentRemaining == ((100.0f * (float)remaining)/(float)configCapacity));
      }  
     
      DF df = new DF(new File(cluster.getDataDirectory()), conf);
    
      //
      // Currently two data directories are created by the data node
      // in the MiniDFSCluster. This results in each data directory having
      // capacity equals to the disk capacity of the data directory.
      // Hence the capacity reported by the data node is twice the disk space
      // the disk capacity
      //
      // So multiply the disk capacity and reserved space by two
      // for accommodating it
      //
      int numOfDataDirs = 2;
     
      long diskCapacity = numOfDataDirs * df.getCapacity();
      reserved *= numOfDataDirs;
     
      configCapacity = namesystem.getCapacityTotal();
      used = namesystem.getCapacityUsed();
      nonDFSUsed = namesystem.getCapacityUsedNonDFS();
      remaining = namesystem.getCapacityRemaining();
      percentUsed = namesystem.getCapacityUsedPercent();
      percentRemaining = namesystem.getCapacityRemainingPercent();
     
      LOG.info("Data node directory " + cluster.getDataDirectory());
          
      LOG.info("Name node diskCapacity " + diskCapacity + " configCapacity "
          + configCapacity + " reserved " + reserved + " used " + used
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    return new Token<DelegationTokenIdentifier>(dtId, dtSecretManager);
  }
 
  @Test
  public void testDelegationTokenNamesystemApi() throws Exception {
    final FSNamesystem namesys = cluster.getNameNode().getNamesystem();
    final UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
    ugi.setAuthenticationMethod(AuthenticationMethod.KERBEROS);
    config.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
    //Set conf again so that namesystem finds security enabled
    UserGroupInformation.setConfiguration(config);
    ugi.doAs(new PrivilegedExceptionAction<Object>() {
      public Object run() throws Exception {
        try {
          Token<DelegationTokenIdentifier> token = namesys
              .getDelegationToken(new Text(ugi.getShortUserName()));
          namesys.renewDelegationToken(token);
          namesys.cancelDelegationToken(token);
        } catch (IOException e) {
          e.printStackTrace();
          throw e;
        }
        return null;
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    });
  }
 
  @Test
  public void testGetDelegationTokenWithoutKerberos() throws Exception {
    final FSNamesystem namesys = cluster.getNameNode().getNamesystem();
    UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
    ugi.setAuthenticationMethod(AuthenticationMethod.TOKEN);
    config.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
    //Set conf again so that namesystem finds security enabled
    UserGroupInformation.setConfiguration(config);
    ugi.doAs(new PrivilegedExceptionAction<Object>() {
      public Object run() throws Exception {
        try {
          namesys.getDelegationToken(new Text("arenewer"));
          Assert
              .fail("Delegation token should not be issued without Kerberos authentication");
        } catch (IOException e) {
          // success
        }
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    });
  }

  @Test
  public void testRenewDelegationTokenWithoutKerberos() throws Exception {
    final FSNamesystem namesys = cluster.getNameNode().getNamesystem();
    UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
    ugi.setAuthenticationMethod(AuthenticationMethod.TOKEN);
    config.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
    //Set conf again so that namesystem finds security enabled
    UserGroupInformation.setConfiguration(config);
    final Token<DelegationTokenIdentifier> token = generateDelegationToken(
        "owner", ugi.getShortUserName());
    ugi.doAs(new PrivilegedExceptionAction<Object>() {
      public Object run() throws Exception {
        try {
          namesys.renewDelegationToken(token);
          Assert
              .fail("Delegation token should not be renewed without Kerberos authentication");
        } catch (IOException e) {
          // success
        }
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    }
    // verify we have the same number of physical blocks and stored in NN
    assertEquals(totalReal, totalNN);

    // now check the number of under-replicated blocks
    FSNamesystem fsn = FSNamesystem.getFSNamesystem();
    // force update of all the metric counts by calling computeDatanodeWork
    fsn.computeDatanodeWork();
    // get all the counts
    long underRepl = fsn.getUnderReplicatedBlocks();
    long pendRepl = fsn.getPendingReplicationBlocks();
    long totalRepl = underRepl + pendRepl;
    System.out.println("underreplicated after = "+ underRepl +
        " and pending repl ="  + pendRepl + "; total underRepl = " + totalRepl);

    System.out.println("total blocks (real and replicating):" +
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