Examples of DFSTestUtil

Examples of org.apache.hadoop.dfs.DFSTestUtil

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   *
   * @throws Exception
   */
  public void testReadWrite() throws Exception {

    DFSTestUtil util = new DFSTestUtil("TestFTPFileSystem", 20, 3, 1024 * 1024);
    localFs.setWorkingDirectory(workDir);
    Path localData = new Path(workDir, "srcData");
    Path remoteData = new Path("srcData");

    util.createFiles(localFs, localData.toUri().getPath());

    boolean dataConsistency = util.checkFiles(localFs, localData.getName());
    assertTrue("Test data corrupted", dataConsistency);

    // Copy files and directories recursively to FTP file system.
    boolean filesCopied = FileUtil.copy(localFs, localData, ftpFs, remoteData,
        false, defaultConf);
    assertTrue("Copying to FTPFileSystem failed", filesCopied);

    // Rename the remote copy
    Path renamedData = new Path("Renamed");
    boolean renamed = ftpFs.rename(remoteData, renamedData);
    assertTrue("Rename failed", renamed);

    // Copy files and directories from FTP file system and delete remote copy.
    filesCopied = FileUtil.copy(ftpFs, renamedData, localFs, workDir, true,
        defaultConf);
    assertTrue("Copying from FTPFileSystem fails", filesCopied);

    // Check if the data was received completely without any corruption.
    dataConsistency = util.checkFiles(localFs, renamedData.getName());
    assertTrue("Invalid or corrupted data recieved from FTP Server!",
        dataConsistency);

    // Delete local copies
    boolean deleteSuccess = localFs.delete(renamedData, true)
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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    return bStream.toString();
  }

  /** do fsck */
  public void testFsck() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 20, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      final long precision = 1L;
      conf.setLong("dfs.access.time.precision", precision);
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      final String fileName = "/srcdat";
      util.createFiles(fs, fileName);
      util.waitReplication(fs, fileName, (short)3);
      FileStatus[] stats = fs.listStatus(new Path(fileName));
      assertFalse(0==stats.length);
      final Path file = stats[0].getPath();
      long aTime = fs.getFileStatus(file).getAccessTime();
      Thread.sleep(2*precision);
      String outStr = runFsck(conf, 0, true, "/");
      assertEquals(aTime, fs.getFileStatus(file).getAccessTime());
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      System.out.println(outStr);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
     
      // restart the cluster; bring up namenode but not the data nodes
      cluster = new MiniDFSCluster(conf, 0, false, null);
      outStr = runFsck(conf, 1, true, "/");
      // expect the result is corrupt
      assertTrue(outStr.contains(NamenodeFsck.CORRUPT_STATUS));
      System.out.println(outStr);
     
      // bring up data nodes & cleanup cluster
      cluster.startDataNodes(conf, 4, true, null, null);
      cluster.waitActive();
      cluster.waitClusterUp();
      fs = cluster.getFileSystem();
      util.cleanup(fs, "/srcdat");
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
    }
  }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }

  public void testFsckNonExistent() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 20, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/non-existent");
      assertEquals(-1, outStr.indexOf(NamenodeFsck.HEALTHY_STATUS));
      System.out.println(outStr);
      util.cleanup(fs, "/srcdat");
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
    }
  }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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    }
  }

  /** Test fsck with permission set on inodes */
  public void testFsckPermission() throws Exception {
    final DFSTestUtil util = new DFSTestUtil(getClass().getSimpleName(), 20, 3, 8*1024);
    final Configuration conf = new Configuration();
    conf.setLong("dfs.blockreport.intervalMsec", 10000L);

    MiniDFSCluster cluster = null;
    try {
      // Create a cluster with the current user, write some files
      cluster = new MiniDFSCluster(conf, 4, true, null);
      final MiniDFSCluster c2 = cluster;
      final String dir = "/dfsck";
      final Path dirpath = new Path(dir);
      final FileSystem fs = c2.getFileSystem();
     
      util.createFiles(fs, dir);
      util.waitReplication(fs, dir, (short)3);
      fs.setPermission(dirpath, new FsPermission((short)0700));
     
      // run DFSck as another user, should fail with permission issue
      UserGroupInformation fakeUGI = UserGroupInformation.createUserForTesting(
          "ProbablyNotARealUserName", new String[] { "ShangriLa" });
      fakeUGI.doAs(new PrivilegedExceptionAction<Object>() {
        @Override
        public Object run() throws Exception {
          System.out.println(runFsck(conf, -1, true, dir));
          return null;
        }
      });
     
      //set permission and try DFSck again as the fake user, should succeed
      fs.setPermission(dirpath, new FsPermission((short)0777));
      fakeUGI.doAs(new PrivilegedExceptionAction<Object>() {
        @Override
        public Object run() throws Exception {
          final String outStr = runFsck(conf, 0, true, dir);
          System.out.println(outStr);
          assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
          return null;
        }
      });
     
      util.cleanup(fs, dir);
    } finally {
      if (cluster != null) { cluster.shutdown(); }
    }
  }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }

  public void testFsckMove() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 5, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      String topDir = "/srcdat";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
     
      // Corrupt a block by deleting it
      String[] fileNames = util.getFileNames(topDir);
      DFSClient dfsClient = new DFSClient(new InetSocketAddress("localhost",
                                          cluster.getNameNodePort()), conf);
      String block = dfsClient.namenode.
                      getBlockLocations(fileNames[0], 0, Long.MAX_VALUE).
                      get(0).getBlock().getBlockName();
      File baseDir = new File(System.getProperty("test.build.data",
                                                 "build/test/data"),"dfs/data");
      for (int i=0; i<8; i++) {
        File blockFile = new File(baseDir, "data" +(i+1)+ "/current/" + block);
        if(blockFile.exists()) {
          assertTrue(blockFile.delete());
        }
      }

      // We excpect the filesystem to be corrupted
      outStr = runFsck(conf, 1, false, "/");
      while (!outStr.contains(NamenodeFsck.CORRUPT_STATUS)) {
        try {
          Thread.sleep(100);
        } catch (InterruptedException ignore) {
        }
        outStr = runFsck(conf, 1, false, "/");
      }
     
      // Fix the filesystem by moving corrupted files to lost+found
      outStr = runFsck(conf, 1, true, "/", "-move");
      assertTrue(outStr.contains(NamenodeFsck.CORRUPT_STATUS));
     
      // Check to make sure we have healthy filesystem
      outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      util.cleanup(fs, topDir);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }
 
  public void testFsckOpenFiles() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 4, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      String topDir = "/srcdat";
      String randomString = "HADOOP  ";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      // Open a file for writing and do not close for now
      Path openFile = new Path(topDir + "/openFile");
      FSDataOutputStream out = fs.create(openFile);
      int writeCount = 0;
      while (writeCount != 100) {
        out.write(randomString.getBytes());
        writeCount++;                 
      }
      // We expect the filesystem to be HEALTHY and show one open file
      outStr = runFsck(conf, 0, true, topDir);
      System.out.println(outStr);
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      assertFalse(outStr.contains("OPENFORWRITE"));
      // Use -openforwrite option to list open files
      outStr = runFsck(conf, 0, true, topDir, "-openforwrite");
      System.out.println(outStr);
      assertTrue(outStr.contains("OPENFORWRITE"));
      assertTrue(outStr.contains("openFile"));
      // Close the file
      out.close();
      // Now, fsck should show HEALTHY fs and should not show any open files
      outStr = runFsck(conf, 0, true, topDir);
      System.out.println(outStr);
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      assertFalse(outStr.contains("OPENFORWRITE"));
      util.cleanup(fs, topDir);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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    return bStream.toString();
  }

  /** do fsck */
  public void testFsck() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 20, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(-1 != outStr.indexOf("HEALTHY"));
      System.out.println(outStr);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
     
      // restart the cluster; bring up namenode but not the data nodes
      cluster = new MiniDFSCluster(conf, 0, false, null);
      outStr = runFsck(conf, 1, true, "/");
      // expect the result is corrupt
      assertTrue(outStr.contains("CORRUPT"));
      System.out.println(outStr);
     
      // bring up data nodes & cleanup cluster
      cluster.startDataNodes(conf, 4, true, null, null);
      cluster.waitActive();
      cluster.waitClusterUp();
      fs = cluster.getFileSystem();
      util.cleanup(fs, "/srcdat");
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
    }
  }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }

  public void testFsckNonExistent() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 20, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/non-existent");
      assertEquals(-1, outStr.indexOf("HEALTHY"));
      System.out.println(outStr);
      util.cleanup(fs, "/srcdat");
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
    }
  }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }

  public void testFsckMove() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 5, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      conf.set("dfs.blockreport.intervalMsec", Integer.toString(30));
      cluster = new MiniDFSCluster(conf, 4, true, null);
      String topDir = "/srcdat";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains("HEALTHY"));
     
      // Corrupt a block by deleting it
      String[] fileNames = util.getFileNames(topDir);
      DFSClient dfsClient = new DFSClient(new InetSocketAddress("localhost",
                                          cluster.getNameNodePort()), conf);
      String block = dfsClient.namenode.
                      getBlockLocations(fileNames[0], 0, Long.MAX_VALUE).
                      get(0).getBlock().getBlockName();
      File baseDir = new File(System.getProperty("test.build.data"),"dfs/data");
      for (int i=0; i<8; i++) {
        File blockFile = new File(baseDir, "data" +(i+1)+ "/current/" + block);
        if(blockFile.exists()) {
          assertTrue(blockFile.delete());
        }
      }

      // We excpect the filesystem to be corrupted
      outStr = runFsck(conf, 1, false, "/");
      while (!outStr.contains("CORRUPT")) {
        try {
          Thread.sleep(100);
        } catch (InterruptedException ignore) {
        }
        outStr = runFsck(conf, 1, false, "/");
      }
     
      // Fix the filesystem by moving corrupted files to lost+found
      outStr = runFsck(conf, 1, true, "/", "-move");
      assertTrue(outStr.contains("CORRUPT"));
     
      // Check to make sure we have healthy filesystem
      outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains("HEALTHY"));
      util.cleanup(fs, topDir);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
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Examples of org.apache.hadoop.hdfs.DFSTestUtil

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      if (cluster != null) { cluster.shutdown(); }
    }
  }
 
  public void testFsckOpenFiles() throws Exception {
    DFSTestUtil util = new DFSTestUtil("TestFsck", 4, 3, 8*1024);
    MiniDFSCluster cluster = null;
    FileSystem fs = null;
    try {
      Configuration conf = new Configuration();
      cluster = new MiniDFSCluster(conf, 4, true, null);
      String topDir = "/srcdat";
      String randomString = "HADOOP  ";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains("HEALTHY"));
      // Open a file for writing and do not close for now
      Path openFile = new Path(topDir + "/openFile");
      FSDataOutputStream out = fs.create(openFile);
      int writeCount = 0;
      while (writeCount != 100) {
        out.write(randomString.getBytes());
        writeCount++;                 
      }
      // We expect the filesystem to be HEALTHY and show one open file
      outStr = runFsck(conf, 0, true, topDir);
      System.out.println(outStr);
      assertTrue(outStr.contains("HEALTHY"));
      assertFalse(outStr.contains("OPENFORWRITE"));
      // Use -openforwrite option to list open files
      outStr = runFsck(conf, 0, true, topDir, "-openforwrite");
      System.out.println(outStr);
      assertTrue(outStr.contains("OPENFORWRITE"));
      assertTrue(outStr.contains("openFile"));
      // Close the file
      out.close();
      // Now, fsck should show HEALTHY fs and should not show any open files
      outStr = runFsck(conf, 0, true, topDir);
      System.out.println(outStr);
      assertTrue(outStr.contains("HEALTHY"));
      assertFalse(outStr.contains("OPENFORWRITE"));
      util.cleanup(fs, topDir);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
    } finally {
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      if (cluster != null) { cluster.shutdown(); }
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