Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.DistributedFileSystem.create()

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    // OP_REASSIGN_LEASE 22
    String filePath = "/hard-lease-recovery-test";
    byte[] bytes = "foo-bar-baz".getBytes();
    DFSClientAdapter.stopLeaseRenewer(dfs);
    FSDataOutputStream leaseRecoveryPath = dfs.create(new Path(filePath));
    leaseRecoveryPath.write(bytes);
    leaseRecoveryPath.hflush();
    // Set the hard lease timeout to 1 second.
    cluster.setLeasePeriod(60 * 1000, 1000);
    // wait for lease recovery to complete
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    cluster.waitActive();
    DistributedFileSystem fs = (DistributedFileSystem) cluster.getFileSystem();
    OutputStream out = null;
    try {
      fs.mkdirs(new Path("/test-target"));
      out = fs.create(new Path("/test-source/foo")); // don't close
      fs.rename(new Path("/test-source/"), new Path("/test-target/"));

      fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
      cluster.getNameNodeRpc().saveNamespace();
      fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
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      // 7: create a file /test/datafile1
      final Path childFile1 = new Path(parent, "datafile1");
      hasException = false;
      try {
        fout = dfs.create(childFile1);
      } catch (QuotaExceededException e) {
        hasException = true;
      }
      assertTrue(hasException);
     
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      runCommand(admin, new String[]{"-clrQuota", childDir0.toString()}, false);
      c = dfs.getContentSummary(childDir0);
      assertEquals(c.getQuota(), -1);
     
      // 10: create a file /test/datafile1
      fout = dfs.create(childFile1, replication);
     
      // 10.s: but writing fileLen bytes should result in an quota exception
      hasException = false;
      try {
        fout.write(new byte[fileLen]);
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      cluster.transitionToActive(0);
      cluster.transitionToStandby(1);
      DistributedFileSystem dfs = cluster.getFileSystem(0);
      String pathString = "/tmp1.txt";
      Path filePath = new Path(pathString);
      FSDataOutputStream create = dfs.create(filePath,
          FsPermission.getDefault(), true, 1024, (short) 3, testData.length(),
          null);
      create.write(testData.getBytes());
      create.hflush();
      DFSClient client = DFSClientAdapter.getClient(dfs);
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    DistributedFileSystem dfs =
      (DistributedFileSystem)cluster.getFileSystem();
    FileContext fc = FileContext.getFileContext(cluster.getURI(0), config);
    // OP_ADD 0, OP_SET_GENSTAMP 10
    Path pathFileCreate = new Path("/file_create");
    FSDataOutputStream s = dfs.create(pathFileCreate);
    // OP_CLOSE 9
    s.close();
    // OP_RENAME_OLD 1
    Path pathFileMoved = new Path("/file_moved");
    dfs.rename(pathFileCreate, pathFileMoved);
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    dfs.delete(pathFileMoved, false);
    // OP_MKDIR 3
    Path pathDirectoryMkdir = new Path("/directory_mkdir");
    dfs.mkdirs(pathDirectoryMkdir);
    // OP_SET_REPLICATION 4
    s = dfs.create(pathFileCreate);
    s.close();
    dfs.setReplication(pathFileCreate, (short)1);
    // OP_SET_PERMISSIONS 7
    Short permission = 0777;
    dfs.setPermission(pathFileCreate, new FsPermission(permission));
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    // OP_REASSIGN_LEASE 22
    String filePath = "/hard-lease-recovery-test";
    byte[] bytes = "foo-bar-baz".getBytes();
    DFSClientAdapter.stopLeaseRenewer(dfs);
    FSDataOutputStream leaseRecoveryPath = dfs.create(new Path(filePath));
    leaseRecoveryPath.write(bytes);
    leaseRecoveryPath.hflush();
    // Set the hard lease timeout to 1 second.
    cluster.setLeasePeriod(60 * 1000, 1000);
    // wait for lease recovery to complete
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    cluster.waitActive();
    DistributedFileSystem fs = (DistributedFileSystem) cluster.getFileSystem();
    OutputStream out = null;
    try {
      fs.mkdirs(new Path("/test-target"));
      out = fs.create(new Path("/test-source/foo")); // don't close
      fs.rename(new Path("/test-source/"), new Path("/test-target/"));

      fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
      cluster.getNameNodeRpc().saveNamespace();
      fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
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    DistributedFileSystem fs = (DistributedFileSystem) cluster.getFileSystem();
    OutputStream out = null;
    try {
      fs.mkdirs(new Path("/test-target"));
      out = fs.create(new Path("/test-source/foo")); // don't close
      fs.rename(new Path("/test-source/"), new Path("/test-target/"));

      fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
      cluster.getNameNode().saveNamespace();
      fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
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