hadoop GlobbedCopyListing 源码

  • 2022-10-20
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haddop GlobbedCopyListing 代码


 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.hadoop.tools;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.security.Credentials;

import java.io.IOException;
import java.util.List;
import java.util.ArrayList;

 * GlobbedCopyListing implements the CopyListing interface, to create the copy
 * listing-file by "globbing" all specified source paths (wild-cards and all.)
public class GlobbedCopyListing extends CopyListing {
  private static final Logger LOG = LoggerFactory.getLogger(GlobbedCopyListing.class);

  private final CopyListing simpleListing;
   * Constructor, to initialize the configuration.
   * @param configuration The input Configuration object.
   * @param credentials Credentials object on which the FS delegation tokens are cached. If null
   * delegation token caching is skipped
  public GlobbedCopyListing(Configuration configuration, Credentials credentials) {
    super(configuration, credentials);
    simpleListing = new SimpleCopyListing(getConf(), credentials) ;

  /** {@inheritDoc} */
  protected void validatePaths(DistCpContext context)
      throws IOException, InvalidInputException {

   * Implementation of CopyListing::buildListing().
   * Creates the copy listing by "globbing" all source-paths.
   * @param pathToListingFile The location at which the copy-listing file
   *                           is to be created.
   * @param context The distcp context with associated input options.
   * @throws IOException
  public void doBuildListing(Path pathToListingFile, DistCpContext context)
      throws IOException {

    List<Path> globbedPaths = new ArrayList<Path>();
    if (context.getSourcePaths().isEmpty()) {
      throw new InvalidInputException("Nothing to process. Source paths::EMPTY");  

    for (Path p : context.getSourcePaths()) {
      FileSystem fs = p.getFileSystem(getConf());
      FileStatus[] inputs = fs.globStatus(p);

      if(inputs != null && inputs.length > 0) {
        for (FileStatus onePath: inputs) {
      } else {
        throw new InvalidInputException(p + " doesn't exist");        

    simpleListing.buildListing(pathToListingFile, context);

  /** {@inheritDoc} */
  protected long getBytesToCopy() {
    return simpleListing.getBytesToCopy();

  /** {@inheritDoc} */
  protected long getNumberOfPaths() {
    return simpleListing.getNumberOfPaths();



hadoop 源码目录


hadoop CopyFilter 源码

hadoop CopyListing 源码

hadoop CopyListingFileStatus 源码

hadoop DiffInfo 源码

hadoop DistCp 源码

hadoop DistCpConstants 源码

hadoop DistCpContext 源码

hadoop DistCpOptionSwitch 源码

hadoop DistCpOptions 源码

hadoop DistCpSync 源码

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