Examples of org.apache.hadoop.fs.FileSystem.open()

org.apache.hadoop.fs.FileSystem.open()
Opens an FSDataInputStream at the indicated Path. @param f the file name to open @param bufferSize the size of the buffer to be used.

      throw new StoreException("Path " + p + " does not exist");
    }
    if (!isCompressed()) {
      if (getSplit() == null) {
        // no codec, no split
        InputStream input = fs.open(p);
        holder.setStream(input);
      } else {
        // no codec, with split
        FSDataInputStream input = fs.open(inputPath);
        input.seek(getSplit().getStart());

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        // no codec, no split
        InputStream input = fs.open(p);
        holder.setStream(input);
      } else {
        // no codec, with split
        FSDataInputStream input = fs.open(inputPath);
        input.seek(getSplit().getStart());
        holder.setStream(input);
      }
    } else {
      Class<?> clazz = ClassUtils.resolveClassName(getCodec().getCodecClass(), getClass().getClassLoader());

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      CompressionCodec compressionCodec = (CompressionCodec) ReflectionUtils.newInstance(clazz,
          getConfiguration());
      Decompressor decompressor = CodecPool.getDecompressor(compressionCodec);
      if (getSplit() == null) {
        // with codec, no split
        FSDataInputStream winput = fs.open(p);
        InputStream input = compressionCodec.createInputStream(winput, decompressor);
        holder.setWrappedStream(winput);
        holder.setStream(input);
      } else {
        // with codec, with split

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        // with codec, with split
        long start = getSplit().getStart();
        long end = start + getSplit().getLength();
        log.info("SplitCompressionInputStream start=" + start + " end=" + end);


        FSDataInputStream winput = fs.open(p);
        SplitCompressionInputStream input = ((SplittableCompressionCodec) compressionCodec).createInputStream(
            winput, decompressor, start, end, SplittableCompressionCodec.READ_MODE.BYBLOCK);
        holder.setWrappedStream(winput);
        holder.setStream(input);
      }

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    expectedOutput.add("Charles Wood,525-9709 In Rd.,1-370-528-4758,62714");
    expectedOutput.add("Macaulay Jackson,5435 Dui. Avenue,1-770-395-6446,31584");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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    expectedOutput.add("Timon Leonard,716 Ac Ave,1-857-935-3882,62240");
    expectedOutput.add("Macaulay Jackson,5435 Dui. Avenue,1-770-395-6446,31584");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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    expectedOutput.add("Timon Leonard,716 Ac Ave,1-857-935-3882,62240");
    expectedOutput.add("Macaulay Jackson,5435 Dui. Avenue,1-770-395-6446,31584");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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    expectedOutput.add("Charles Wood,525-9709 In Rd.,1-370-528-4758,62714");
    expectedOutput.add("Macaulay Jackson,5435 Dui. Avenue,1-770-395-6446,31584");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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    expectedOutput.add("Timon Leonard,716 Ac Ave,1-857-935-3882,62240");
    expectedOutput.add("Macaulay Jackson,5435 Dui. Avenue,1-770-395-6446,31584");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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    expectedOutput.add("Kennedy Bailey,Jerome Perry,David Cabrera,Edan Fleming,Orlando Tyson");
    expectedOutput.add("Kennedy Bailey,Plato Atkinson,Stuart Guy,Rooney Levy,Judah Benson");
    int count = 0;
    for (FileStatus fileStat: status) {
      logger.debug("File status is " + fileStat.getPath() );
      FSDataInputStream in = outputFS.open(fileStat.getPath());
      String line = null;      
      while ((line = in.readLine()) != null) {
        logger.debug("Output is " + line);
        assertTrue("Matched output " + line , expectedOutput.contains(line));
        expectedOutput.remove(line);

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