Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.DFSTestUtil.createFiles()

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      fs = cluster.getFileSystem();
      DistributedFileSystem dfs = (DistributedFileSystem) fs;
      DFSTestUtil util = new DFSTestUtil.Builder().
          setName("testGetCorruptFiles").setNumFiles(3).
          setMaxLevels(1).setMaxSize(1024).build();
      util.createFiles(fs, "/corruptData");

      RemoteIterator<Path> corruptFileBlocks =
        dfs.listCorruptFileBlocks(new Path("/corruptData"));
      int numCorrupt = countPaths(corruptFileBlocks);
      assertTrue(numCorrupt == 0);
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      // create 110 files with one block each
      DFSTestUtil util = new DFSTestUtil.Builder().setName("testMaxCorruptFiles").
          setNumFiles(maxCorruptFileBlocks * 3).setMaxLevels(1).setMaxSize(512).
          build();
      util.createFiles(fs, "/srcdat2", (short) 1);
      util.waitReplication(fs, "/srcdat2", (short) 1);

      // verify that there are no bad blocks.
      final NameNode namenode = cluster.getNameNode();
      Collection<FSNamesystem.CorruptFileBlockInfo> badFiles = namenode.
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    FileSystem fs = cluster.getFileSystem();
    try {
      // test finalized replicas
      final String TopDir = "/test";
      DFSTestUtil util = new DFSTestUtil("TestCrcCorruption", 2, 3, 8*1024);
      util.createFiles(fs, TopDir, (short)3);
      util.waitReplication(fs, TopDir, (short)3);
      util.checkFiles(fs, TopDir);
      cluster.restartDataNodes();
      cluster.waitActive();
      util.checkFiles(fs, TopDir);
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      conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, precision);
      conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
      fs = cluster.getFileSystem();
      final String fileName = "/srcdat";
      util.createFiles(fs, fileName);
      util.waitReplication(fs, fileName, (short)3);
      final Path file = new Path(fileName);
      long aTime = fs.getFileStatus(file).getAccessTime();
      Thread.sleep(precision);
      setupAuditLogs();
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    try {
      Configuration conf = new HdfsConfiguration();
      conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
      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");
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      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(
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      cluster = new MiniDFSCluster.Builder(conf).
          numDataNodes(NUM_DATANODES).build();
      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));
      DFSClient dfsClient = new DFSClient(new InetSocketAddress("localhost",
                                          cluster.getNameNodePort()), conf);
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      conf.setInt(DFSConfigKeys.DFS_DATANODE_DIRECTORYSCAN_INTERVAL_KEY, 1);
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
      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
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      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
      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");
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      cluster.waitActive();
      fs = cluster.getFileSystem();
      DFSTestUtil util = new DFSTestUtil.Builder().
          setName("testGetCorruptFiles").setNumFiles(3).setMaxLevels(1).
          setMaxSize(1024).build();
      util.createFiles(fs, "/corruptData", (short) 1);
      util.waitReplication(fs, "/corruptData", (short) 1);

      // String outStr = runFsck(conf, 0, true, "/corruptData", "-list-corruptfileblocks");
      String outStr = runFsck(conf, 0, false, "/corruptData", "-list-corruptfileblocks");
      System.out.println("1. good fsck out: " + outStr);
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