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.

  }


  private void createSymlinkInt(String target, String link,
      PermissionStatus dirPerms, boolean createParent) 
      throws IOException, UnresolvedLinkException {
    HdfsFileStatus resultingStat = null;
    writeLock();
    try {
      checkOperation(OperationCategory.WRITE);


      if (!createParent) {

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    } finally {
      writeUnlock();
    }
    getEditLog().logSync();
    if (auditLog.isInfoEnabled() && isExternalInvocation()) {
      final HdfsFileStatus stat = dir.getFileInfo(src, false);
      logAuditEvent(UserGroupInformation.getCurrentUser(),
                    getRemoteIp(),
                    "create", src, null, stat);
    }
  }

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  }


  private boolean renameToInt(String src, String dst) 
    throws IOException, UnresolvedLinkException {
    boolean status = false;
    HdfsFileStatus resultingStat = null;
    if (NameNode.stateChangeLog.isDebugEnabled()) {
      NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: " + src +
          " to " + dst);
    }
    writeLock();

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          dst + Path.SEPARATOR + new Path(src).getName(): dst;
      checkParentAccess(src, FsAction.WRITE);
      checkAncestorAccess(actualdst, FsAction.WRITE);
    }


    HdfsFileStatus dinfo = dir.getFileInfo(dst, false);
    if (dir.renameTo(src, dst)) {
      unprotectedChangeLease(src, dst, dinfo);     // update lease with new filename
      return true;
    }
    return false;

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  /** Rename src to dst */
  void renameTo(String src, String dst, Options.Rename... options)
      throws IOException, UnresolvedLinkException {
    HdfsFileStatus resultingStat = null;
    if (NameNode.stateChangeLog.isDebugEnabled()) {
      NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: with options - "
          + src + " to " + dst);
    }
    writeLock();

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    if (isPermissionEnabled) {
      checkParentAccess(src, FsAction.WRITE);
      checkAncestorAccess(dst, FsAction.WRITE);
    }


    HdfsFileStatus dinfo = dir.getFileInfo(dst, false);
    dir.renameTo(src, dst, options);
    unprotectedChangeLease(src, dst, dinfo); // update lease with new filename
  }

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   * @throws StandbyException 
   */
  HdfsFileStatus getFileInfo(String src, boolean resolveLink) 
    throws AccessControlException, UnresolvedLinkException,
           StandbyException, IOException {
    HdfsFileStatus stat = null;


    readLock();


    try {
      checkOperation(OperationCategory.READ);

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    } finally {
      writeUnlock();
    }
    getEditLog().logSync();
    if (status && auditLog.isInfoEnabled() && isExternalInvocation()) {
      final HdfsFileStatus stat = dir.getFileInfo(src, false);
      logAuditEvent(UserGroupInformation.getCurrentUser(),
                    getRemoteIp(),
                    "mkdirs", src, null, stat);
    }
    return status;

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    } else if (op == GetOpParam.Op.OPEN
        || op == GetOpParam.Op.GETFILECHECKSUM
        || op == PostOpParam.Op.APPEND) {
      //choose a datanode containing a replica 
      final NamenodeProtocols np = namenode.getRpcServer();
      final HdfsFileStatus status = np.getFileInfo(path);
      if (status == null) {
        throw new FileNotFoundException("File " + path + " not found.");
      }
      final long len = status.getLen();
      if (op == GetOpParam.Op.OPEN) {
        if (openOffset < 0L || (openOffset >= len && len > 0)) {
          throw new IOException("Offset=" + openOffset
              + " out of the range [0, " + len + "); " + op + ", path=" + path);
        }

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      final String js = JsonUtil.toJsonString(locatedblocks);
      return Response.ok(js).type(MediaType.APPLICATION_JSON).build();
    }
    case GETFILESTATUS:
    {
      final HdfsFileStatus status = np.getFileInfo(fullpath);
      if (status == null) {
        throw new FileNotFoundException("File does not exist: " + fullpath);
      }


      final String js = JsonUtil.toJsonString(status, true);

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org.apache.hadoop.fs.FileStatus

org.apache.hadoop.fs.Hdfs

org.apache.hadoop.fs.LocatedBlockFileStatus

org.apache.hadoop.fs.LocatedFileStatus

org.apache.hadoop.fs.Path

org.apache.hadoop.hdfs.DFSClient

org.apache.hadoop.hdfs.DFSOutputStream

org.apache.hadoop.hdfs.DistributedFileSystem

org.apache.hadoop.hdfs.nfs.mount.RpcProgramMountd

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