Package org.apache.hadoop.util

Examples of org.apache.hadoop.util.PureJavaCrc32

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  /**
   * Write this spill record to the location provided.
   */
  public void writeToFile(Path loc, JobConf job)
      throws IOException {
    writeToFile(loc, job, new PureJavaCrc32());
  }
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        byte[] version = new byte[CHECKSUM_VERSION.length];
        sums.readFully(version);
        if (!Arrays.equals(version, CHECKSUM_VERSION))
          throw new IOException("Not a checksum file: "+sumFile);
        this.bytesPerSum = sums.readInt();
        set(fs.verifyChecksum, new PureJavaCrc32(), bytesPerSum, 4);
      } catch (FileNotFoundException e) {         // quietly ignore
        set(fs.verifyChecksum, null, 1, 0);
      } catch (IOException e) {                   // loudly ignore
        LOG.warn("Problem opening checksum file: "+ file +
                 ".  Ignoring exception: " , e);
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                          int bufferSize,
                          short replication,
                          long blockSize,
                          Progressable progress)
      throws IOException {
      super(new PureJavaCrc32(), fs.getBytesPerSum(), 4);
      int bytesPerSum = fs.getBytesPerSum();
      this.datas = fs.getRawFileSystem().create(file, overwrite, bufferSize,
                                         replication, blockSize, progress);
      int sumBufferSize = fs.getSumBufferSize(bytesPerSum, bufferSize);
      this.sums = fs.getRawFileSystem().create(fs.getChecksumFile(file), true,
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        sums.readFully(version);
        if (!Arrays.equals(version, CHECKSUM_VERSION)) {
          throw new IOException("Not a checksum file: "+sumFile);
        }
        this.bytesPerSum = sums.readInt();
        set(fs.verifyChecksum, new PureJavaCrc32(), bytesPerSum, 4);
      } catch (FileNotFoundException e) {         // quietly ignore
        set(fs.verifyChecksum, null, 1, 0);
      } catch (IOException e) {                   // loudly ignore
        LOG.warn("Problem opening checksum file: "+ file +
                 ".  Ignoring exception: " , e);
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      final EnumSet<CreateFlag> createFlag,
      final FsPermission absolutePermission, final int bufferSize,
      final short replication, final long blockSize,
      final Progressable progress, final ChecksumOpt checksumOpt,
      final boolean createParent) throws IOException {
      super(new PureJavaCrc32(), fs.getBytesPerSum(), 4);

      // checksumOpt is passed down to the raw fs. Unless it implements
      // checksum impelemts internally, checksumOpt will be ignored.
      // If the raw fs does checksum internally, we will end up with
      // two layers of checksumming. i.e. checksumming checksum file.
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    private final DataOutputBuffer buf;
    private final Checksum checksum;

    public Writer(DataOutputBuffer out) {
      this.buf = out;
      this.checksum = new PureJavaCrc32();
    }
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    @SuppressWarnings("deprecation")
    public Reader(DataInputStream in, StreamLimiter limiter,
        int logVersion) {
      this.logVersion = logVersion;
      if (LayoutVersion.supports(Feature.EDITS_CHESKUM, logVersion)) {
        this.checksum = new PureJavaCrc32();
      } else {
        this.checksum = null;
      }

      if (this.checksum != null) {
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    private final DataOutputBuffer buf;
    private final Checksum checksum;

    public Writer(DataOutputBuffer out) {
      this.buf = out;
      this.checksum = new PureJavaCrc32();
    }
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    private final DataOutputBuffer buf;
    private final Checksum checksum;

    public Writer(DataOutputBuffer out) {
      this.buf = out;
      this.checksum = new PureJavaCrc32();
    }
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     */
    public Reader(DataInputStream in, StreamLimiter limiter, int logVersion) {
      this.logVersion = logVersion;
      if (NameNodeLayoutVersion.supports(
          LayoutVersion.Feature.EDITS_CHESKUM, logVersion)) {
        this.checksum = new PureJavaCrc32();
      } else {
        this.checksum = null;
      }
      // It is possible that the logVersion is actually a future layoutversion
      // during the rolling upgrade (e.g., the NN gets upgraded first). We
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Related Classes of org.apache.hadoop.util.PureJavaCrc32

  • org.apache.hadoop.examples.terasort.GenSort
  • org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker
  • org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSOutputSummer
  • org.apache.hadoop.fs.ChecksumFs$ChecksumFSInputChecker
  • org.apache.hadoop.fs.ChecksumFs$ChecksumFSOutputSummer
  • org.apache.hadoop.hdfs.BlockReader
  • org.apache.hadoop.hdfs.BlockReaderAccelerator
  • org.apache.hadoop.hdfs.DFSClient$BlockReader
  • org.apache.hadoop.hdfs.DFSClient$DFSOutputStream
  • org.apache.hadoop.hdfs.DFSOutputStream
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