Java Code Examples for org.apache.hadoop.fs.FileContext#createSymlink()

The following examples show how to use org.apache.hadoop.fs.FileContext#createSymlink() . 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: TestFsck.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
/** Test fsck with symlinks in the filesystem */
@Test
public void testFsckSymlink() throws Exception {
  final DFSTestUtil util = new DFSTestUtil.Builder().
      setName(getClass().getSimpleName()).setNumFiles(1).build();
  final Configuration conf = new HdfsConfiguration();
  conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);

  MiniDFSCluster cluster = null;
  FileSystem fs = null;
  try {
    final long precision = 1L;
    conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, precision);
    conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
    fs = cluster.getFileSystem();
    final String fileName = "/srcdat";
    util.createFiles(fs, fileName);
    final FileContext fc = FileContext.getFileContext(
        cluster.getConfiguration(0));
    final Path file = new Path(fileName);
    final Path symlink = new Path("/srcdat-symlink");
    fc.createSymlink(file, symlink, false);
    util.waitReplication(fs, fileName, (short)3);
    long aTime = fc.getFileStatus(symlink).getAccessTime();
    Thread.sleep(precision);
    setupAuditLogs();
    String outStr = runFsck(conf, 0, true, "/");
    verifyAuditLogs();
    assertEquals(aTime, fc.getFileStatus(symlink).getAccessTime());
    System.out.println(outStr);
    assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
    assertTrue(outStr.contains("Total symlinks:\t\t1"));
    util.cleanup(fs, fileName);
  } finally {
    if (fs != null) {try{fs.close();} catch(Exception e){}}
    if (cluster != null) { cluster.shutdown(); }
  }
}
Example 2
Source File: TestFsck.java    From big-c with Apache License 2.0 5 votes vote down vote up 
/** Test fsck with symlinks in the filesystem */
@Test
public void testFsckSymlink() throws Exception {
  final DFSTestUtil util = new DFSTestUtil.Builder().
      setName(getClass().getSimpleName()).setNumFiles(1).build();
  final Configuration conf = new HdfsConfiguration();
  conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);

  MiniDFSCluster cluster = null;
  FileSystem fs = null;
  try {
    final long precision = 1L;
    conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, precision);
    conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
    fs = cluster.getFileSystem();
    final String fileName = "/srcdat";
    util.createFiles(fs, fileName);
    final FileContext fc = FileContext.getFileContext(
        cluster.getConfiguration(0));
    final Path file = new Path(fileName);
    final Path symlink = new Path("/srcdat-symlink");
    fc.createSymlink(file, symlink, false);
    util.waitReplication(fs, fileName, (short)3);
    long aTime = fc.getFileStatus(symlink).getAccessTime();
    Thread.sleep(precision);
    setupAuditLogs();
    String outStr = runFsck(conf, 0, true, "/");
    verifyAuditLogs();
    assertEquals(aTime, fc.getFileStatus(symlink).getAccessTime());
    System.out.println(outStr);
    assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
    assertTrue(outStr.contains("Total symlinks:\t\t1"));
    util.cleanup(fs, fileName);
  } finally {
    if (fs != null) {try{fs.close();} catch(Exception e){}}
    if (cluster != null) { cluster.shutdown(); }
  }
}