Java Code Examples for org.apache.hadoop.io.file.tfile.TFile#Reader

The following examples show how to use org.apache.hadoop.io.file.tfile.TFile#Reader . 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: TFileParser.java    From reef with Apache License 2.0 6 votes vote down vote up 
/**
 * @param path
 * @return
 * @throws IOException
 */
private TFile.Reader.Scanner getScanner(final Path path) throws IOException {
  LOG.log(Level.FINE, "Creating Scanner for path {0}", path);
  final TFile.Reader reader = new TFile.Reader(this.fileSystem.open(path),
      this.fileSystem.getFileStatus(path).getLen(),
      this.configuration);
  final TFile.Reader.Scanner scanner = reader.createScanner();
  for (int counter = 0;
       counter < 3 && !scanner.atEnd();
       counter += 1) {
    //skip VERSION, APPLICATION_ACL, and APPLICATION_OWNER
    scanner.advance();
  }
  LOG.log(Level.FINE, "Created Scanner for path {0}", path);
  return scanner;
}
Example 2
Source File: AggregatedLogFormat.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
public LogReader(Configuration conf, Path remoteAppLogFile)
    throws IOException {
  FileContext fileContext =
      FileContext.getFileContext(remoteAppLogFile.toUri(), conf);
  this.fsDataIStream = fileContext.open(remoteAppLogFile);
  reader =
      new TFile.Reader(this.fsDataIStream, fileContext.getFileStatus(
          remoteAppLogFile).getLen(), conf);
  this.scanner = reader.createScanner();
}
Example 3
Source File: FileSystemApplicationHistoryStore.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
public HistoryFileReader(Path historyFile) throws IOException {
  fsdis = fs.open(historyFile);
  reader =
      new TFile.Reader(fsdis, fs.getFileStatus(historyFile).getLen(),
        getConfig());
  reset();
}
Example 4
Source File: AggregatedLogFormat.java    From big-c with Apache License 2.0 5 votes vote down vote up 
public LogReader(Configuration conf, Path remoteAppLogFile)
    throws IOException {
  FileContext fileContext = FileContext.getFileContext(conf);
  this.fsDataIStream = fileContext.open(remoteAppLogFile);
  reader =
      new TFile.Reader(this.fsDataIStream, fileContext.getFileStatus(
          remoteAppLogFile).getLen(), conf);
  this.scanner = reader.createScanner();
}
Example 5
Source File: FileSystemApplicationHistoryStore.java    From big-c with Apache License 2.0 5 votes vote down vote up 
public HistoryFileReader(Path historyFile) throws IOException {
  fsdis = fs.open(historyFile);
  reader =
      new TFile.Reader(fsdis, fs.getFileStatus(historyFile).getLen(),
        getConfig());
  reset();
}
Example 6
Source File: TFileRecordReader.java    From tez with Apache License 2.0 5 votes vote down vote up 
@Override public void initialize(InputSplit split, TaskAttemptContext context)
    throws IOException, InterruptedException {
  FileSplit fileSplit = (FileSplit) split;
  LOG.info("Initializing TFileRecordReader : " + fileSplit.getPath().toString());
  start = fileSplit.getStart();
  end = start + fileSplit.getLength();

  FileSystem fs = fileSplit.getPath().getFileSystem(context.getConfiguration());
  splitPath = fileSplit.getPath();
  fin = fs.open(splitPath);
  reader = new TFile.Reader(fin, fs.getFileStatus(splitPath).getLen(),
      context.getConfiguration());
  scanner = reader.createScannerByByteRange(start, fileSplit.getLength());
}