Java Code Examples for org.apache.hadoop.tools.util.DistCpUtils#unpackAttributes()

The following examples show how to use org.apache.hadoop.tools.util.DistCpUtils#unpackAttributes() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: hadoop   File: CopyMapper.java    License: Apache License 2.0 6 votes vote down vote up
/**
 * Implementation of the Mapper::setup() method. This extracts the DistCp-
 * options specified in the Job's configuration, to set up the Job.
 * @param context Mapper's context.
 * @throws IOException On IO failure.
 * @throws InterruptedException If the job is interrupted.
 */
@Override
public void setup(Context context) throws IOException, InterruptedException {
  conf = context.getConfiguration();

  syncFolders = conf.getBoolean(DistCpOptionSwitch.SYNC_FOLDERS.getConfigLabel(), false);
  ignoreFailures = conf.getBoolean(DistCpOptionSwitch.IGNORE_FAILURES.getConfigLabel(), false);
  skipCrc = conf.getBoolean(DistCpOptionSwitch.SKIP_CRC.getConfigLabel(), false);
  overWrite = conf.getBoolean(DistCpOptionSwitch.OVERWRITE.getConfigLabel(), false);
  append = conf.getBoolean(DistCpOptionSwitch.APPEND.getConfigLabel(), false);
  preserve = DistCpUtils.unpackAttributes(conf.get(DistCpOptionSwitch.
      PRESERVE_STATUS.getConfigLabel()));

  targetWorkPath = new Path(conf.get(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH));
  Path targetFinalPath = new Path(conf.get(
          DistCpConstants.CONF_LABEL_TARGET_FINAL_PATH));
  targetFS = targetFinalPath.getFileSystem(conf);

  if (targetFS.exists(targetFinalPath) && targetFS.isFile(targetFinalPath)) {
    overWrite = true; // When target is an existing file, overwrite it.
  }

  if (conf.get(DistCpConstants.CONF_LABEL_SSL_CONF) != null) {
    initializeSSLConf(context);
  }
}
 
Example 2
Source Project: big-c   File: CopyMapper.java    License: Apache License 2.0 6 votes vote down vote up
/**
 * Implementation of the Mapper::setup() method. This extracts the DistCp-
 * options specified in the Job's configuration, to set up the Job.
 * @param context Mapper's context.
 * @throws IOException On IO failure.
 * @throws InterruptedException If the job is interrupted.
 */
@Override
public void setup(Context context) throws IOException, InterruptedException {
  conf = context.getConfiguration();

  syncFolders = conf.getBoolean(DistCpOptionSwitch.SYNC_FOLDERS.getConfigLabel(), false);
  ignoreFailures = conf.getBoolean(DistCpOptionSwitch.IGNORE_FAILURES.getConfigLabel(), false);
  skipCrc = conf.getBoolean(DistCpOptionSwitch.SKIP_CRC.getConfigLabel(), false);
  overWrite = conf.getBoolean(DistCpOptionSwitch.OVERWRITE.getConfigLabel(), false);
  append = conf.getBoolean(DistCpOptionSwitch.APPEND.getConfigLabel(), false);
  preserve = DistCpUtils.unpackAttributes(conf.get(DistCpOptionSwitch.
      PRESERVE_STATUS.getConfigLabel()));

  targetWorkPath = new Path(conf.get(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH));
  Path targetFinalPath = new Path(conf.get(
          DistCpConstants.CONF_LABEL_TARGET_FINAL_PATH));
  targetFS = targetFinalPath.getFileSystem(conf);

  if (targetFS.exists(targetFinalPath) && targetFS.isFile(targetFinalPath)) {
    overWrite = true; // When target is an existing file, overwrite it.
  }

  if (conf.get(DistCpConstants.CONF_LABEL_SSL_CONF) != null) {
    initializeSSLConf(context);
  }
}
 
Example 3
Source Project: hadoop   File: CopyCommitter.java    License: Apache License 2.0 4 votes vote down vote up
private void preserveFileAttributesForDirectories(Configuration conf) throws IOException {
  String attrSymbols = conf.get(DistCpConstants.CONF_LABEL_PRESERVE_STATUS);
  final boolean syncOrOverwrite = syncFolder || overwrite;

  LOG.info("About to preserve attributes: " + attrSymbols);

  EnumSet<FileAttribute> attributes = DistCpUtils.unpackAttributes(attrSymbols);
  final boolean preserveRawXattrs =
      conf.getBoolean(DistCpConstants.CONF_LABEL_PRESERVE_RAWXATTRS, false);

  Path sourceListing = new Path(conf.get(DistCpConstants.CONF_LABEL_LISTING_FILE_PATH));
  FileSystem clusterFS = sourceListing.getFileSystem(conf);
  SequenceFile.Reader sourceReader = new SequenceFile.Reader(conf,
                                    SequenceFile.Reader.file(sourceListing));
  long totalLen = clusterFS.getFileStatus(sourceListing).getLen();

  Path targetRoot = new Path(conf.get(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH));

  long preservedEntries = 0;
  try {
    CopyListingFileStatus srcFileStatus = new CopyListingFileStatus();
    Text srcRelPath = new Text();

    // Iterate over every source path that was copied.
    while (sourceReader.next(srcRelPath, srcFileStatus)) {
      // File-attributes for files are set at the time of copy,
      // in the map-task.
      if (! srcFileStatus.isDirectory()) continue;

      Path targetFile = new Path(targetRoot.toString() + "/" + srcRelPath);
      //
      // Skip the root folder when syncOrOverwrite is true.
      //
      if (targetRoot.equals(targetFile) && syncOrOverwrite) continue;

      FileSystem targetFS = targetFile.getFileSystem(conf);
      DistCpUtils.preserve(targetFS, targetFile, srcFileStatus, attributes,
          preserveRawXattrs);

      taskAttemptContext.progress();
      taskAttemptContext.setStatus("Preserving status on directory entries. [" +
          sourceReader.getPosition() * 100 / totalLen + "%]");
    }
  } finally {
    IOUtils.closeStream(sourceReader);
  }
  LOG.info("Preserved status on " + preservedEntries + " dir entries on target");
}
 
Example 4
Source Project: hadoop   File: CopyMapper.java    License: Apache License 2.0 4 votes vote down vote up
private static EnumSet<DistCpOptions.FileAttribute>
        getFileAttributeSettings(Mapper.Context context) {
  String attributeString = context.getConfiguration().get(
          DistCpOptionSwitch.PRESERVE_STATUS.getConfigLabel());
  return DistCpUtils.unpackAttributes(attributeString);
}
 
Example 5
Source Project: big-c   File: CopyCommitter.java    License: Apache License 2.0 4 votes vote down vote up
private void preserveFileAttributesForDirectories(Configuration conf) throws IOException {
  String attrSymbols = conf.get(DistCpConstants.CONF_LABEL_PRESERVE_STATUS);
  final boolean syncOrOverwrite = syncFolder || overwrite;

  LOG.info("About to preserve attributes: " + attrSymbols);

  EnumSet<FileAttribute> attributes = DistCpUtils.unpackAttributes(attrSymbols);
  final boolean preserveRawXattrs =
      conf.getBoolean(DistCpConstants.CONF_LABEL_PRESERVE_RAWXATTRS, false);

  Path sourceListing = new Path(conf.get(DistCpConstants.CONF_LABEL_LISTING_FILE_PATH));
  FileSystem clusterFS = sourceListing.getFileSystem(conf);
  SequenceFile.Reader sourceReader = new SequenceFile.Reader(conf,
                                    SequenceFile.Reader.file(sourceListing));
  long totalLen = clusterFS.getFileStatus(sourceListing).getLen();

  Path targetRoot = new Path(conf.get(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH));

  long preservedEntries = 0;
  try {
    CopyListingFileStatus srcFileStatus = new CopyListingFileStatus();
    Text srcRelPath = new Text();

    // Iterate over every source path that was copied.
    while (sourceReader.next(srcRelPath, srcFileStatus)) {
      // File-attributes for files are set at the time of copy,
      // in the map-task.
      if (! srcFileStatus.isDirectory()) continue;

      Path targetFile = new Path(targetRoot.toString() + "/" + srcRelPath);
      //
      // Skip the root folder when syncOrOverwrite is true.
      //
      if (targetRoot.equals(targetFile) && syncOrOverwrite) continue;

      FileSystem targetFS = targetFile.getFileSystem(conf);
      DistCpUtils.preserve(targetFS, targetFile, srcFileStatus, attributes,
          preserveRawXattrs);

      taskAttemptContext.progress();
      taskAttemptContext.setStatus("Preserving status on directory entries. [" +
          sourceReader.getPosition() * 100 / totalLen + "%]");
    }
  } finally {
    IOUtils.closeStream(sourceReader);
  }
  LOG.info("Preserved status on " + preservedEntries + " dir entries on target");
}
 
Example 6
Source Project: big-c   File: CopyMapper.java    License: Apache License 2.0 4 votes vote down vote up
private static EnumSet<DistCpOptions.FileAttribute>
        getFileAttributeSettings(Mapper.Context context) {
  String attributeString = context.getConfiguration().get(
          DistCpOptionSwitch.PRESERVE_STATUS.getConfigLabel());
  return DistCpUtils.unpackAttributes(attributeString);
}