Java Code Examples for org.apache.hadoop.fs.LocalFileSystem#open()

The following examples show how to use org.apache.hadoop.fs.LocalFileSystem#open() . 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: TestFSInputChecker.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
private void testFileCorruption(LocalFileSystem fileSys) throws IOException {
  // create a file and verify that checksum corruption results in 
  // a checksum exception on LocalFS
  
  String dir = PathUtils.getTestDirName(getClass());
  Path file = new Path(dir + "/corruption-test.dat");
  Path crcFile = new Path(dir + "/.corruption-test.dat.crc");
  
  writeFile(fileSys, file);
  
  int fileLen = (int)fileSys.getFileStatus(file).getLen();
  
  byte [] buf = new byte[fileLen];

  InputStream in = fileSys.open(file);
  IOUtils.readFully(in, buf, 0, buf.length);
  in.close();
  
  // check .crc corruption
  checkFileCorruption(fileSys, file, crcFile);
  fileSys.delete(file, true);
  
  writeFile(fileSys, file);
  
  // check data corrutpion
  checkFileCorruption(fileSys, file, file);
  
  fileSys.delete(file, true);
}
Example 2
Source File: TestFSInputChecker.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
private void checkFileCorruption(LocalFileSystem fileSys, Path file, 
                                 Path fileToCorrupt) throws IOException {
  
  // corrupt the file 
  RandomAccessFile out = 
    new RandomAccessFile(new File(fileToCorrupt.toString()), "rw");
  
  byte[] buf = new byte[(int)fileSys.getFileStatus(file).getLen()];    
  int corruptFileLen = (int)fileSys.getFileStatus(fileToCorrupt).getLen();
  assertTrue(buf.length >= corruptFileLen);
  
  rand.nextBytes(buf);
  out.seek(corruptFileLen/2);
  out.write(buf, 0, corruptFileLen/4);
  out.close();

  boolean gotException = false;
  
  InputStream in = fileSys.open(file);
  try {
    IOUtils.readFully(in, buf, 0, buf.length);
  } catch (ChecksumException e) {
    gotException = true;
  }
  assertTrue(gotException);
  in.close();    
}
Example 3
Source File: TestFSInputChecker.java    From big-c with Apache License 2.0 5 votes vote down vote up 
private void testFileCorruption(LocalFileSystem fileSys) throws IOException {
  // create a file and verify that checksum corruption results in 
  // a checksum exception on LocalFS
  
  String dir = PathUtils.getTestDirName(getClass());
  Path file = new Path(dir + "/corruption-test.dat");
  Path crcFile = new Path(dir + "/.corruption-test.dat.crc");
  
  writeFile(fileSys, file);
  
  int fileLen = (int)fileSys.getFileStatus(file).getLen();
  
  byte [] buf = new byte[fileLen];

  InputStream in = fileSys.open(file);
  IOUtils.readFully(in, buf, 0, buf.length);
  in.close();
  
  // check .crc corruption
  checkFileCorruption(fileSys, file, crcFile);
  fileSys.delete(file, true);
  
  writeFile(fileSys, file);
  
  // check data corrutpion
  checkFileCorruption(fileSys, file, file);
  
  fileSys.delete(file, true);
}
Example 4
Source File: TestFSInputChecker.java    From big-c with Apache License 2.0 5 votes vote down vote up 
private void checkFileCorruption(LocalFileSystem fileSys, Path file, 
                                 Path fileToCorrupt) throws IOException {
  
  // corrupt the file 
  RandomAccessFile out = 
    new RandomAccessFile(new File(fileToCorrupt.toString()), "rw");
  
  byte[] buf = new byte[(int)fileSys.getFileStatus(file).getLen()];    
  int corruptFileLen = (int)fileSys.getFileStatus(fileToCorrupt).getLen();
  assertTrue(buf.length >= corruptFileLen);
  
  rand.nextBytes(buf);
  out.seek(corruptFileLen/2);
  out.write(buf, 0, corruptFileLen/4);
  out.close();

  boolean gotException = false;
  
  InputStream in = fileSys.open(file);
  try {
    IOUtils.readFully(in, buf, 0, buf.length);
  } catch (ChecksumException e) {
    gotException = true;
  }
  assertTrue(gotException);
  in.close();    
}
Example 5
Source File: TestFSInputChecker.java    From RDFS with Apache License 2.0 5 votes vote down vote up 
private void testFileCorruption(LocalFileSystem fileSys) throws IOException {
  // create a file and verify that checksum corruption results in 
  // a checksum exception on LocalFS
  
  String dir = System.getProperty("test.build.data", ".");
  Path file = new Path(dir + "/corruption-test.dat");
  Path crcFile = new Path(dir + "/.corruption-test.dat.crc");
  
  writeFile(fileSys, file);
  
  int fileLen = (int)fileSys.getFileStatus(file).getLen();
  
  byte [] buf = new byte[fileLen];

  InputStream in = fileSys.open(file);
  IOUtils.readFully(in, buf, 0, buf.length);
  in.close();
  
  // check .crc corruption
  checkFileCorruption(fileSys, file, crcFile);
  fileSys.delete(file, true);
  
  writeFile(fileSys, file);
  
  // check data corrutpion
  checkFileCorruption(fileSys, file, file);
  
  fileSys.delete(file, true);
}
Example 6
Source File: TestFSInputChecker.java    From RDFS with Apache License 2.0 5 votes vote down vote up 
private void checkFileCorruption(LocalFileSystem fileSys, Path file, 
                                 Path fileToCorrupt) throws IOException {
  
  // corrupt the file 
  RandomAccessFile out = 
    new RandomAccessFile(new File(fileToCorrupt.toString()), "rw");
  
  byte[] buf = new byte[(int)fileSys.getFileStatus(file).getLen()];    
  int corruptFileLen = (int)fileSys.getFileStatus(fileToCorrupt).getLen();
  assertTrue(buf.length >= corruptFileLen);
  
  rand.nextBytes(buf);
  out.seek(corruptFileLen/2);
  out.write(buf, 0, corruptFileLen/4);
  out.close();

  boolean gotException = false;
  
  InputStream in = fileSys.open(file);
  try {
    IOUtils.readFully(in, buf, 0, buf.length);
  } catch (ChecksumException e) {
    gotException = true;
  }
  assertTrue(gotException);
  in.close();    
}
Example 7
Source File: TestFSInputChecker.java    From hadoop-gpu with Apache License 2.0 5 votes vote down vote up 
private void testFileCorruption(LocalFileSystem fileSys) throws IOException {
  // create a file and verify that checksum corruption results in 
  // a checksum exception on LocalFS
  
  String dir = System.getProperty("test.build.data", ".");
  Path file = new Path(dir + "/corruption-test.dat");
  Path crcFile = new Path(dir + "/.corruption-test.dat.crc");
  
  writeFile(fileSys, file);
  
  int fileLen = (int)fileSys.getFileStatus(file).getLen();
  
  byte [] buf = new byte[fileLen];

  InputStream in = fileSys.open(file);
  IOUtils.readFully(in, buf, 0, buf.length);
  in.close();
  
  // check .crc corruption
  checkFileCorruption(fileSys, file, crcFile);
  fileSys.delete(file, true);
  
  writeFile(fileSys, file);
  
  // check data corrutpion
  checkFileCorruption(fileSys, file, file);
  
  fileSys.delete(file, true);
}
Example 8
Source File: TestFSInputChecker.java    From hadoop-gpu with Apache License 2.0 5 votes vote down vote up 
private void checkFileCorruption(LocalFileSystem fileSys, Path file, 
                                 Path fileToCorrupt) throws IOException {
  
  // corrupt the file 
  RandomAccessFile out = 
    new RandomAccessFile(new File(fileToCorrupt.toString()), "rw");
  
  byte[] buf = new byte[(int)fileSys.getFileStatus(file).getLen()];    
  int corruptFileLen = (int)fileSys.getFileStatus(fileToCorrupt).getLen();
  assertTrue(buf.length >= corruptFileLen);
  
  rand.nextBytes(buf);
  out.seek(corruptFileLen/2);
  out.write(buf, 0, corruptFileLen/4);
  out.close();

  boolean gotException = false;
  
  InputStream in = fileSys.open(file);
  try {
    IOUtils.readFully(in, buf, 0, buf.length);
  } catch (ChecksumException e) {
    gotException = true;
  }
  assertTrue(gotException);
  in.close();    
}