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 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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      if (!targetNode.isDirectory()) {
        return new HdfsFileStatus[]{createHdfsFileStatus(
            HdfsFileStatus.EMPTY_NAME, targetNode)};
      }
      List<INode> contents = ((INodeDirectory)targetNode).getChildren();
      HdfsFileStatus listing[] = new HdfsFileStatus[contents.size()];
      int i = 0;
      for (INode cur : contents) {
        listing[i] = createHdfsFileStatus(cur.name, cur);
        i++;
      }

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      List<INode> contents = dirInode.getChildren();
      // find the first child whose name is greater than startAfter
      int startChild = dirInode.nextChild(startAfter);
      int totalNumChildren = contents.size();
      int numOfListing = Math.min(totalNumChildren-startChild, this.lsLimit);
      HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
      LocatedBlocks [] blockLocations = new LocatedBlocks[numOfListing];
      for (int i=0; i<numOfListing; i++) {
        INode cur = contents.get(startChild+i);
        listing[i] = createHdfsFileStatus(cur.name, cur);
        if (needLocation) {

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     if (node.isDirectory()) {
       INodeDirectory dirNode = (INodeDirectory)node;
       //length is used to represent the number of children for directories.
       size = dirNode.getChildren().size();
     }
     return new HdfsFileStatus(
         size,
         node.isDirectory(),
         replication,
         blocksize,
         node.getModificationTime(),

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      doc.startTag("listing");
      for (Map.Entry<String,String> m : root.entrySet()) {
        doc.attribute(m.getKey(), m.getValue());
      }


      HdfsFileStatus base = nnproxy.getHdfsFileInfo(path);
      if ((base != null) && base.isDir()) {
        writeInfo(path, base, doc);
      }


      Stack<String> pathstack = new Stack<String>();
      pathstack.push(path);

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          concatDeleteOp.timestamp);
      break;
    }
    case OP_RENAME: {
      RenameOp renameOp = (RenameOp)op;
      HdfsFileStatus dinfo = fsDir.getHdfsFileInfo(renameOp.dst);
      fsDir.unprotectedRenameTo(renameOp.src, renameOp.dst,
                                renameOp.timestamp);
      fsNamesys.changeLease(renameOp.src, renameOp.dst, dinfo);
      break;
    }

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          final String path = ServletUtil.getDecodedPath(request, "/data");
          final String encodedPath = ServletUtil.getRawPath(request, "/data");
          String delegationToken = request
              .getParameter(JspHelper.DELEGATION_PARAMETER_NAME);


          HdfsFileStatus info = nn.getFileInfo(path);
          if (info != null && !info.isDir()) {
            response.sendRedirect(createRedirectURL(path, encodedPath,
                info, ugi, nn, request, delegationToken).toString());
          } else if (info == null) {
            response.sendError(400, "File not found " + path);
          } else {

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      DFSTestUtil.createFile(fs, new Path("/test1/file"), 1024, (short) 1, 0);
      assertEquals(++expectedLastInodeId, fsn.getLastInodeId());
      assertEquals(++inodeCount, fsn.dir.getInodeMapSize());
      
      // Ensure right inode ID is returned in file status
      HdfsFileStatus fileStatus = nnrpc.getFileInfo("/test1/file");
      assertEquals(expectedLastInodeId, fileStatus.getFileId());


      // Rename a directory
      // Last inode ID and inode map size should not change
      Path renamedPath = new Path("/test2");
      assertTrue(fs.rename(path, renamedPath));

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      long dirId = fsdir.getINode(dir.toString()).getId();
      long parentId = fsdir.getINode("/").getId();
      String testPath = "/.reserved/.inodes/" + dirId + "/..";


      client = new DFSClient(NameNode.getAddress(conf), conf);
      HdfsFileStatus status = client.getFileInfo(testPath);
      assertTrue(parentId == status.getFileId());
      
      // Test root's parent is still root
      testPath = "/.reserved/.inodes/" + parentId + "/..";
      status = client.getFileInfo(testPath);
      assertTrue(parentId == status.getFileId());
      
    } finally {
      IOUtils.cleanup(LOG, client);
      if (cluster != null) {
        cluster.shutdown();

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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 = getRPCServer(namenode);
      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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MStress_Client

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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