Package org.apache.hadoop.hdfs

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

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    FileSystem fs = null;

    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fs = cluster.getFileSystem();
      secondary = startSecondaryNameNode(conf);
      fos = fs.create(new Path("tmpfile0"));
      fos.write(new byte[] { 0, 1, 2, 3 });
      secondary.doCheckpoint();
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    FileSystem fs = null;

    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .checkExitOnShutdown(false).build();
      cluster.waitActive();
      fs = cluster.getFileSystem();
      fos = fs.create(new Path("tmpfile0"));
      fos.write(new byte[] { 0, 1, 2, 3 });

      // Cause merge to fail in next checkpoint.
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    FileSystem fileSys = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      assertTrue(!fileSys.exists(file1));
     
      // Make the checkpoint fail after rolling the edits log.
      secondary = startSecondaryNameNode(conf);
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    // namenode restart accounted for the rolled edit logs.
    //
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .format(false).build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      checkFile(fileSys, file1, replication);
      cleanupFile(fileSys, file1);
      secondary = startSecondaryNameNode(conf);
      secondary.doCheckpoint();
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    FileSystem fileSys = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      assertTrue(!fileSys.exists(file1));
      //
      // Make the checkpoint fail after uploading the new fsimage.
      //
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    // namenode restart accounted for the rolled edit logs.
    //
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .format(false).build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      checkFile(fileSys, file1, replication);
      cleanupFile(fileSys, file1);
      secondary = startSecondaryNameNode(conf);
      secondary.doCheckpoint();
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    FileSystem fileSys = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      assertTrue(!fileSys.exists(file1));
      //
      // Make the checkpoint fail after rolling the edit log.
      //
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    // namenode restart accounted for the twice-rolled edit logs.
    //
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .format(false).build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      checkFile(fileSys, file1, replication);
      cleanupFile(fileSys, file1);
      secondary = startSecondaryNameNode(conf);
      secondary.doCheckpoint();
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    FSImage image = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      image = cluster.getNameNode().getFSImage();
      assertTrue(!fileSys.exists(file1));
      StorageDirectory sd = image.getStorage().getStorageDir(0);
     
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    FileSystem fileSys = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      assertTrue(!fileSys.exists(file1));
      //
      // Make the checkpoint fail after rolling the edit log.
      //
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