Java Code Examples for org.apache.hadoop.tools.DistCpOptions#preserve()

The following examples show how to use org.apache.hadoop.tools.DistCpOptions#preserve() . 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 File: CubeMigrationCrossClusterCLI.java From kylin with Apache License 2.0

5 votes

protected void copyHDFSPath(String srcDir, Configuration srcConf, String dstDir, Configuration dstConf)
        throws Exception {
    logger.info("start to copy hdfs directory from {} to {}", srcDir, dstDir);
    DistCpOptions distCpOptions = OptionsParser.parse(new String[] { srcDir, dstDir });
    distCpOptions.preserve(DistCpOptions.FileAttribute.BLOCKSIZE);
    distCpOptions.setBlocking(true);
    setTargetPathExists(distCpOptions);
    DistCp distCp = new DistCp(getConfOfDistCp(), distCpOptions);
    distCp.execute();
    logger.info("copied hdfs directory from {} to {}", srcDir, dstDir);
}

Example 2

Source File: TestCopyCommitter.java From hadoop with Apache License 2.0

4 votes

@Test
public void testPreserveStatus() {
  TaskAttemptContext taskAttemptContext = getTaskAttemptContext(config);
  JobContext jobContext = new JobContextImpl(taskAttemptContext.getConfiguration(),
      taskAttemptContext.getTaskAttemptID().getJobID());
  Configuration conf = jobContext.getConfiguration();


  String sourceBase;
  String targetBase;
  FileSystem fs = null;
  try {
    OutputCommitter committer = new CopyCommitter(null, taskAttemptContext);
    fs = FileSystem.get(conf);
    FsPermission sourcePerm = new FsPermission((short) 511);
    FsPermission initialPerm = new FsPermission((short) 448);
    sourceBase = TestDistCpUtils.createTestSetup(fs, sourcePerm);
    targetBase = TestDistCpUtils.createTestSetup(fs, initialPerm);

    DistCpOptions options = new DistCpOptions(Arrays.asList(new Path(sourceBase)),
        new Path("/out"));
    options.preserve(FileAttribute.PERMISSION);
    options.appendToConf(conf);
    options.setTargetPathExists(false);
    
    CopyListing listing = new GlobbedCopyListing(conf, CREDENTIALS);
    Path listingFile = new Path("/tmp1/" + String.valueOf(rand.nextLong()));
    listing.buildListing(listingFile, options);

    conf.set(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH, targetBase);

    committer.commitJob(jobContext);
    if (!checkDirectoryPermissions(fs, targetBase, sourcePerm)) {
      Assert.fail("Permission don't match");
    }

    //Test for idempotent commit
    committer.commitJob(jobContext);
    if (!checkDirectoryPermissions(fs, targetBase, sourcePerm)) {
      Assert.fail("Permission don't match");
    }

  } catch (IOException e) {
    LOG.error("Exception encountered while testing for preserve status", e);
    Assert.fail("Preserve status failure");
  } finally {
    TestDistCpUtils.delete(fs, "/tmp1");
    conf.unset(DistCpConstants.CONF_LABEL_PRESERVE_STATUS);
  }

}

Example 3

Source File: TestCopyCommitter.java From big-c with Apache License 2.0

4 votes

@Test
public void testPreserveStatus() {
  TaskAttemptContext taskAttemptContext = getTaskAttemptContext(config);
  JobContext jobContext = new JobContextImpl(taskAttemptContext.getConfiguration(),
      taskAttemptContext.getTaskAttemptID().getJobID());
  Configuration conf = jobContext.getConfiguration();


  String sourceBase;
  String targetBase;
  FileSystem fs = null;
  try {
    OutputCommitter committer = new CopyCommitter(null, taskAttemptContext);
    fs = FileSystem.get(conf);
    FsPermission sourcePerm = new FsPermission((short) 511);
    FsPermission initialPerm = new FsPermission((short) 448);
    sourceBase = TestDistCpUtils.createTestSetup(fs, sourcePerm);
    targetBase = TestDistCpUtils.createTestSetup(fs, initialPerm);

    DistCpOptions options = new DistCpOptions(Arrays.asList(new Path(sourceBase)),
        new Path("/out"));
    options.preserve(FileAttribute.PERMISSION);
    options.appendToConf(conf);
    options.setTargetPathExists(false);
    
    CopyListing listing = new GlobbedCopyListing(conf, CREDENTIALS);
    Path listingFile = new Path("/tmp1/" + String.valueOf(rand.nextLong()));
    listing.buildListing(listingFile, options);

    conf.set(DistCpConstants.CONF_LABEL_TARGET_WORK_PATH, targetBase);

    committer.commitJob(jobContext);
    if (!checkDirectoryPermissions(fs, targetBase, sourcePerm)) {
      Assert.fail("Permission don't match");
    }

    //Test for idempotent commit
    committer.commitJob(jobContext);
    if (!checkDirectoryPermissions(fs, targetBase, sourcePerm)) {
      Assert.fail("Permission don't match");
    }

  } catch (IOException e) {
    LOG.error("Exception encountered while testing for preserve status", e);
    Assert.fail("Preserve status failure");
  } finally {
    TestDistCpUtils.delete(fs, "/tmp1");
    conf.unset(DistCpConstants.CONF_LABEL_PRESERVE_STATUS);
  }

}