Java Code Examples for org.apache.hadoop.fs.FileSystem#getServerDefaults()

The following examples show how to use org.apache.hadoop.fs.FileSystem#getServerDefaults() . 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: TestFileCreation.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * Test that server default values can be retrieved on the client side
 */
@Test
public void testServerDefaults() throws IOException {
  Configuration conf = new HdfsConfiguration();
  conf.setLong(DFS_BLOCK_SIZE_KEY, DFS_BLOCK_SIZE_DEFAULT);
  conf.setInt(DFS_BYTES_PER_CHECKSUM_KEY, DFS_BYTES_PER_CHECKSUM_DEFAULT);
  conf.setInt(DFS_CLIENT_WRITE_PACKET_SIZE_KEY, DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT);
  conf.setInt(DFS_REPLICATION_KEY, DFS_REPLICATION_DEFAULT + 1);
  conf.setInt(IO_FILE_BUFFER_SIZE_KEY, IO_FILE_BUFFER_SIZE_DEFAULT);
  MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
                   .numDataNodes(DFSConfigKeys.DFS_REPLICATION_DEFAULT + 1)
                   .build();
  cluster.waitActive();
  FileSystem fs = cluster.getFileSystem();
  try {
    FsServerDefaults serverDefaults = fs.getServerDefaults();
    assertEquals(DFS_BLOCK_SIZE_DEFAULT, serverDefaults.getBlockSize());
    assertEquals(DFS_BYTES_PER_CHECKSUM_DEFAULT, serverDefaults.getBytesPerChecksum());
    assertEquals(DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT, serverDefaults.getWritePacketSize());
    assertEquals(DFS_REPLICATION_DEFAULT + 1, serverDefaults.getReplication());
    assertEquals(IO_FILE_BUFFER_SIZE_DEFAULT, serverDefaults.getFileBufferSize());
  } finally {
    fs.close();
    cluster.shutdown();
  }
}
Example 2
Source File: TestFileCreation.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * Test that server default values can be retrieved on the client side
 */
@Test
public void testServerDefaults() throws IOException {
  Configuration conf = new HdfsConfiguration();
  conf.setLong(DFS_BLOCK_SIZE_KEY, DFS_BLOCK_SIZE_DEFAULT);
  conf.setInt(DFS_BYTES_PER_CHECKSUM_KEY, DFS_BYTES_PER_CHECKSUM_DEFAULT);
  conf.setInt(DFS_CLIENT_WRITE_PACKET_SIZE_KEY, DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT);
  conf.setInt(DFS_REPLICATION_KEY, DFS_REPLICATION_DEFAULT + 1);
  conf.setInt(IO_FILE_BUFFER_SIZE_KEY, IO_FILE_BUFFER_SIZE_DEFAULT);
  MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
                   .numDataNodes(DFSConfigKeys.DFS_REPLICATION_DEFAULT + 1)
                   .build();
  cluster.waitActive();
  FileSystem fs = cluster.getFileSystem();
  try {
    FsServerDefaults serverDefaults = fs.getServerDefaults();
    assertEquals(DFS_BLOCK_SIZE_DEFAULT, serverDefaults.getBlockSize());
    assertEquals(DFS_BYTES_PER_CHECKSUM_DEFAULT, serverDefaults.getBytesPerChecksum());
    assertEquals(DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT, serverDefaults.getWritePacketSize());
    assertEquals(DFS_REPLICATION_DEFAULT + 1, serverDefaults.getReplication());
    assertEquals(IO_FILE_BUFFER_SIZE_DEFAULT, serverDefaults.getFileBufferSize());
  } finally {
    fs.close();
    cluster.shutdown();
  }
}
Example 3
Source File: HdfsFileWriter.java    From lucene-solr with Apache License 2.0 5 votes vote down vote up 
private static final OutputStream getOutputStream(FileSystem fileSystem, Path path) throws IOException {
  Configuration conf = fileSystem.getConf();
  FsServerDefaults fsDefaults = fileSystem.getServerDefaults(path);
  short replication = fileSystem.getDefaultReplication(path);
  EnumSet<CreateFlag> flags = EnumSet.of(CreateFlag.CREATE);
  if (Boolean.getBoolean(HDFS_SYNC_BLOCK)) {
    flags.add(CreateFlag.SYNC_BLOCK);
  }
  return fileSystem.create(path, FsPermission.getDefault()
      .applyUMask(FsPermission.getUMask(conf)), flags, fsDefaults
      .getFileBufferSize(), replication, fsDefaults
      .getBlockSize(), null);
}