Examples of DFSTestUtil

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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