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

Class org.apache.hadoop.hdfs.MiniDFSCluster

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

org.apache.hadoop.hdfs.MiniDFSCluster.waitActive()
Wait until the cluster is active. @param waitHeartbeats if true, will wait until all DNs have heartbeat

        throw new IOException("Mkdirs failed to create " + inDir.toString());
      }
      Path file1 = new Path(dir1 + "/file1");
      writeFile(conf, file1, (short)1, 1);
      dfs.startDataNodes(conf, 1, true, null, rack2, hosts2, null);
      dfs.waitActive();


      // create file on two datanodes.
      Path file2 = new Path(dir2 + "/file2");
      writeFile(conf, file2, (short)2, 2);

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      assertEquals(fileSplit.getLength(0), BLOCKSIZE);
      assertEquals(fileSplit.getLocations()[0], hosts1[0]); // should be on r1


      // create another file on 3 datanodes and 3 racks.
      dfs.startDataNodes(conf, 1, true, null, rack3, hosts3, null);
      dfs.waitActive();
      Path file3 = new Path(dir3 + "/file3");
      writeFile(conf, new Path(dir3 + "/file3"), (short)3, 3);
      inFormat = new DummyInputFormat();
      FileInputFormat.setInputPaths(job, dir1 + "," + dir2 + "," + dir3);
      inFormat.setMinSplitSizeRack(BLOCKSIZE);

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    MiniDFSCluster cluster = null;
    FileSystem fs = null;


    try {
      cluster = new MiniDFSCluster(conf, 3, true, null);
      cluster.waitActive();
      fs = FileSystem.get(conf);
      FsPermission rootPerm = checkPermission(fs, "/", null);
      FsPermission inheritPerm = FsPermission.createImmutable(
          (short)(rootPerm.toShort() | 0300));

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  public void testFilePermision() throws Exception {
    final Configuration conf = new Configuration();
    conf.setBoolean("dfs.permissions", true);
    MiniDFSCluster cluster = new MiniDFSCluster(conf, 3, true, null);
    cluster.waitActive();


    try {
      FileSystem nnfs = FileSystem.get(conf);
      // test permissions on files that do not exist
      assertFalse(nnfs.exists(CHILD_FILE1));

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      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){}}

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      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));

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      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

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    String outStr = null;


    MiniDFSCluster cluster = null;
    try {
    cluster = new MiniDFSCluster(conf, 3, true, null);
    cluster.waitActive();
    fs = cluster.getFileSystem();
    Path file1 = new Path("/testCorruptBlock");
    DFSTestUtil.createFile(fs, file1, 1024, (short)3, 0);
    // Wait until file replication has completed
    DFSTestUtil.waitReplication(fs, file1, (short)3);

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    try {
      Configuration conf = new Configuration();
      // disable safemode extension to make the test run faster.
      conf.set("dfs.safemode.extension", "1");
      cluster = new MiniDFSCluster(conf, 1, true, null);
      cluster.waitActive();
      
      fs = (DistributedFileSystem)cluster.getFileSystem();
      Path file1 = new Path("/tmp/testManualSafeMode/file1");
      Path file2 = new Path("/tmp/testManualSafeMode/file2");

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      fs.close();
      cluster.shutdown();
      
      // now bring up just the NameNode.
      cluster = new MiniDFSCluster(conf, 0, false, null);
      cluster.waitActive();
      fs = (DistributedFileSystem)cluster.getFileSystem();
      
      LOG.info("Restarted cluster with just the NameNode");
      
      assertTrue("No datanode is started. Should be in SafeMode",

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