Package org.apache.hadoop.hbase.io.hfile.HFile

Examples of org.apache.hadoop.hbase.io.hfile.HFile.Reader

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        .create();
    someTestingWithMetaBlock(writer);
    writer.close();
    fout.close();
    FSDataInputStream fin = fs.open(mFile);
    Reader reader = HFile.createReaderFromStream(mFile, fs.open(mFile),
        this.fs.getFileStatus(mFile).getLen(), cacheConf);
    reader.loadFileInfo();
    // No data -- this should return false.
    assertFalse(reader.getScanner(false, false).seekTo());
    someReadingWithMetaBlock(reader);
    fs.delete(mFile, true);
    reader.close();
    fin.close();
  }
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          .withCompression(compressAlgo)
          .create();
      writer.append("foo".getBytes(), "value".getBytes());
      writer.close();
      fout.close();
      Reader reader = HFile.createReader(fs, mFile, cacheConf);
      reader.loadFileInfo();
      assertNull(reader.getMetaBlock("non-existant", false));
    }
  }
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  public void seekTFile() throws IOException {
    int miss = 0;
    long totalBytes = 0;
    FSDataInputStream fsdis = fs.open(path);
    Reader reader = HFile.createReaderFromStream(path, fsdis,
        fs.getFileStatus(path).getLen(), new CacheConfig(conf));
    reader.loadFileInfo();
    KeySampler kSampler =
        new KeySampler(rng, reader.getFirstKey(), reader.getLastKey(),
            keyLenGen);
    HFileScanner scanner = reader.getScanner(false, USE_PREAD);
    BytesWritable key = new BytesWritable();
    timer.reset();
    timer.start();
    for (int i = 0; i < options.seekCount; ++i) {
      kSampler.next(key);
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            found = true;

            // verify that the compression on this file matches the configured
            // compression
            Path dataFilePath = fileSystem.listStatus(f.getPath())[0].getPath();
            Reader reader = HFile.createReader(fileSystem, dataFilePath,
                new CacheConfig(conf));
            reader.loadFileInfo();
            assertEquals("Incorrect compression used for column family " + familyStr
                         + "(reader: " + reader + ")",
                         configuredCompression.get(familyStr), reader.getCompressionAlgorithm());
            break;
          }
        }

        if (!found) {
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    long start = System.currentTimeMillis();
    SimpleBlockCache cache = new SimpleBlockCache();
    CacheConfig cacheConf = new CacheConfig(cache, true, false, false, false,
        false, false, false);

    Reader reader = HFile.createReader(lfs, path, cacheConf);
    reader.loadFileInfo();
    System.out.println(reader.getTrailer());
    long end = System.currentTimeMillis();

    System.out.println("Index read time: " + (end - start));

    List<String> keys = slurp("/Users/ryan/xaa.50k");

    // Get a scanner that doesn't cache and that uses pread.
    HFileScanner scanner = reader.getScanner(false, true);
    int count;
    long totalBytes = 0;
    int notFound = 0;

    start = System.nanoTime();
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  public void seekTFile() throws IOException {
    int miss = 0;
    long totalBytes = 0;
    FSDataInputStream fsdis = fs.open(path);
    Reader reader = HFile.createReader(path, fsdis,
        fs.getFileStatus(path).getLen(), new CacheConfig(conf));
    reader.loadFileInfo();
    KeySampler kSampler =
        new KeySampler(rng, reader.getFirstKey(), reader.getLastKey(),
            keyLenGen);
    HFileScanner scanner = reader.getScanner(false, USE_PREAD);
    BytesWritable key = new BytesWritable();
    timer.reset();
    timer.start();
    for (int i = 0; i < options.seekCount; ++i) {
      kSampler.next(key);
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  public void testEmptyHFile() throws IOException {
    if (cacheConf == null) cacheConf = new CacheConfig(conf);
    Path f = new Path(ROOT_DIR, getName());
    Writer w = HFile.getWriterFactory(conf, cacheConf).createWriter(this.fs, f);
    w.close();
    Reader r = HFile.createReader(fs, f, cacheConf);
    r.loadFileInfo();
    assertNull(r.getFirstKey());
    assertNull(r.getLastKey());
  }
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        minBlockSize, Compression.getCompressionAlgorithmByName(codec), null);
    LOG.info(writer);
    writeRecords(writer);
    fout.close();
    FSDataInputStream fin = fs.open(ncTFile);
    Reader reader = HFile.createReader(ncTFile, fs.open(ncTFile),
      fs.getFileStatus(ncTFile).getLen(), cacheConf);
    System.out.println(cacheConf.toString());
    // Load up the index.
    reader.loadFileInfo();
    // Get a scanner that caches and that does not use pread.
    HFileScanner scanner = reader.getScanner(true, false);
    // Align scanner at start of the file.
    scanner.seekTo();
    readAllRecords(scanner);
    scanner.seekTo(getSomeKey(50));
    assertTrue("location lookup failed", scanner.seekTo(getSomeKey(50)) == 0);
    // read the key and see if it matches
    ByteBuffer readKey = scanner.getKey();
    assertTrue("seeked key does not match", Arrays.equals(getSomeKey(50),
      Bytes.toBytes(readKey)));

    scanner.seekTo(new byte[0]);
    ByteBuffer val1 = scanner.getValue();
    scanner.seekTo(new byte[0]);
    ByteBuffer val2 = scanner.getValue();
    assertTrue(Arrays.equals(Bytes.toBytes(val1), Bytes.toBytes(val2)));

    reader.close();
    fin.close();
    fs.delete(ncTFile, true);
  }
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        null);
    someTestingWithMetaBlock(writer);
    writer.close();
    fout.close();
    FSDataInputStream fin = fs.open(mFile);
    Reader reader = HFile.createReader(mFile, fs.open(mFile),
        this.fs.getFileStatus(mFile).getLen(), cacheConf);
    reader.loadFileInfo();
    // No data -- this should return false.
    assertFalse(reader.getScanner(false, false).seekTo());
    someReadingWithMetaBlock(reader);
    fs.delete(mFile, true);
    reader.close();
    fin.close();
  }
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      Writer writer = HFile.getWriterFactory(conf, cacheConf).createWriter(fout,
          minBlockSize, compressAlgo, null);
      writer.append("foo".getBytes(), "value".getBytes());
      writer.close();
      fout.close();
      Reader reader = HFile.createReader(fs, mFile, cacheConf);
      reader.loadFileInfo();
      assertNull(reader.getMetaBlock("non-existant", false));
    }
  }
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  • org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat
  • org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat2
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