Examples of org.apache.hadoop.hdfs.protocol.HdfsFileStatus

org.apache.hadoop.hdfs.protocol.HdfsFileStatus
Interface that represents the over the wire information for a file.

    }
    FSPermissionChecker pc = getPermissionChecker();
    checkOperation(OperationCategory.WRITE);
    byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src);
    byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst);
    HdfsFileStatus resultingStat = null;
    boolean success = false;
    writeLock();
    try {
      checkOperation(OperationCategory.WRITE);
      if (isInSafeMode()) {

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    throws AccessControlException, UnresolvedLinkException,
           StandbyException, IOException {
    if (!DFSUtil.isValidName(src)) {
      throw new InvalidPathException("Invalid file name: " + src);
    }
    HdfsFileStatus stat = null;
    FSPermissionChecker pc = getPermissionChecker();
    checkOperation(OperationCategory.READ);
    if (!DFSUtil.isValidName(src)) {
      throw new InvalidPathException("Invalid file name: " + src);
    }

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      throw new InvalidPathException(src);
    }
    FSPermissionChecker pc = getPermissionChecker();
    checkOperation(OperationCategory.WRITE);
    byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
    HdfsFileStatus resultingStat = null;
    boolean status = false;
    writeLock();
    try {
      checkOperation(OperationCategory.WRITE);   
      if (isInSafeMode()) {

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  @Test
  public void testCreate() throws Exception {
    String src = "/testNamenodeRetryCache/testCreate/file";
    // Two retried calls succeed
    newCall();
    HdfsFileStatus status = namesystem.startFile(src, perm, "holder",
        "clientmachine", EnumSet.of(CreateFlag.CREATE), true, (short) 1, BlockSize);
    Assert.assertEquals(status, namesystem.startFile(src, perm, 
        "holder", "clientmachine", EnumSet.of(CreateFlag.CREATE), 
        true, (short) 1, BlockSize));
    Assert.assertEquals(status, namesystem.startFile(src, perm,

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          + " from " + remoteAddress + " for path " + path + " at " + new Date();
      LOG.info(msg);
      out.println(msg);
      namenode.getNamesystem().logFsckEvent(path, remoteAddress);


      final HdfsFileStatus file = namenode.getRpcServer().getFileInfo(path);
      if (file != null) {


        if (showCorruptFileBlocks) {
          listCorruptFileBlocks();
          return;

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  }


  boolean hdfsPathExists(String path)
      throws AccessControlException, UnresolvedLinkException, IOException {
    try {
      HdfsFileStatus hfs = namenode.getRpcServer().getFileInfo(path);
      return (hfs != null);
    } catch (FileNotFoundException e) {
      return false;
    }
  }

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  private void lostFoundInit(DFSClient dfs) {
    lfInited = true;
    try {
      String lfName = "/lost+found";
      
      final HdfsFileStatus lfStatus = dfs.getFileInfo(lfName);
      if (lfStatus == null) { // not exists
        lfInitedOk = dfs.mkdirs(lfName, null, true);
        lostFound = lfName;
      } else if (!lfStatus.isDir()) { // exists but not a directory
        LOG.warn("Cannot use /lost+found : a regular file with this name exists.");
        lfInitedOk = false;
      }  else { // exists and is a directory
        lostFound = lfName;
        lfInitedOk = true;

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   * Append to an existing file if {@link CreateFlag#APPEND} is present
   */
  private DFSOutputStream primitiveAppend(String src, EnumSet<CreateFlag> flag,
      int buffersize, Progressable progress) throws IOException {
    if (flag.contains(CreateFlag.APPEND)) {
      HdfsFileStatus stat = getFileInfo(src);
      if (stat == null) { // No file to append to
        // New file needs to be created if create option is present
        if (!flag.contains(CreateFlag.CREATE)) {
          throw new FileNotFoundException("failed to append to non-existent file "
              + src + " on client " + clientName);

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  }


  private DFSOutputStream append(String src, int buffersize, Progressable progress) 
      throws IOException {
    checkOpen();
    HdfsFileStatus stat = getFileInfo(src);
    if (stat == null) { // No file found
      throw new FileNotFoundException("failed to append to non-existent file "
          + src + " on client " + clientName);
    }
    final DFSOutputStream result = callAppend(stat, src, buffersize, progress);

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    final long fileId = m.containsKey("fileId") ? (Long) m.get("fileId")
        : INodeId.GRANDFATHER_INODE_ID;
    Long childrenNumLong = (Long) m.get("childrenNum");
    final int childrenNum = (childrenNumLong == null) ? -1
            : childrenNumLong.intValue();
    return new HdfsFileStatus(len, type == PathType.DIRECTORY, replication,
        blockSize, mTime, aTime, permission, owner, group,
        symlink, DFSUtil.string2Bytes(localName), fileId, childrenNum);
  }

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