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

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

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    StoreFile f = this.store.getStorefiles().firstEntry().getValue();
    Path storedir = f.getPath().getParent();
    long seqid = f.getMaxSequenceId();
    HBaseConfiguration c = new HBaseConfiguration();
    FileSystem fs = FileSystem.get(c);
    Writer w = StoreFile.getWriter(fs, storedir);
    StoreFile.appendMetadata(w, seqid + 1);
    w.close();
    this.store.close();
    // Reopen it... should pick up two files
    this.store = new Store(storedir.getParent().getParent(),
      this.store.getHRegion(),
      this.store.getFamily(), fs, null, c, null);
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  private void createTFile() throws IOException {
    long totalBytes = 0;
    FSDataOutputStream fout = createFSOutput(path, fs);
    try {
      Writer writer = HFile.getWriterFactoryNoCache(conf)
          .withOutputStream(fout)
          .withBlockSize(options.minBlockSize)
          .withCompression(options.compress)
          .create();
      try {
        BytesWritable key = new BytesWritable();
        BytesWritable val = new BytesWritable();
        timer.start();
        for (long i = 0; true; ++i) {
          if (i % 1000 == 0) { // test the size for every 1000 rows.
            if (fs.getFileStatus(path).getLen() >= options.fileSize) {
              break;
            }
          }
          kvGen.next(key, val, false);
          byte [] k = new byte [key.getLength()];
          System.arraycopy(key.getBytes(), 0, k, 0, key.getLength());
          byte [] v = new byte [val.getLength()];
          System.arraycopy(val.getBytes(), 0, v, 0, key.getLength());
          writer.append(k, v);
          totalBytes += key.getLength();
          totalBytes += val.getLength();
        }
        timer.stop();
      }
      finally {
        writer.close();
      }
    }
    finally {
      fout.close();
    }
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   * @throws IOException
   */
  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).withPath(fs, f).create();
    w.close();
    Reader r = HFile.createReader(fs, f, cacheConf);
    r.loadFileInfo();
    assertNull(r.getFirstKey());
    assertNull(r.getLastKey());
  }
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   */
  void basicWithSomeCodec(String codec) throws IOException {
    if (cacheConf == null) cacheConf = new CacheConfig(conf);
    Path ncTFile = new Path(ROOT_DIR, "basic.hfile." + codec.toString());
    FSDataOutputStream fout = createFSOutput(ncTFile);
    Writer writer = HFile.getWriterFactory(conf, cacheConf)
        .withOutputStream(fout)
        .withBlockSize(minBlockSize)
        .withCompression(codec)
        .create();
    LOG.info(writer);
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  private void metablocks(final String compress) throws Exception {
    if (cacheConf == null) cacheConf = new CacheConfig(conf);
    Path mFile = new Path(ROOT_DIR, "meta.hfile");
    FSDataOutputStream fout = createFSOutput(mFile);
    Writer writer = HFile.getWriterFactory(conf, cacheConf)
        .withOutputStream(fout)
        .withBlockSize(minBlockSize)
        .withCompression(compress)
        .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();
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    if (cacheConf == null) cacheConf = new CacheConfig(conf);
    for (Compression.Algorithm compressAlgo :
        HBaseTestingUtility.COMPRESSION_ALGORITHMS) {
      Path mFile = new Path(ROOT_DIR, "nometa_" + compressAlgo + ".hfile");
      FSDataOutputStream fout = createFSOutput(mFile);
      Writer writer = HFile.getWriterFactory(conf, cacheConf)
          .withOutputStream(fout)
          .withBlockSize(minBlockSize)
          .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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      @Override
      public int compare(byte[] o1, byte[] o2) {
        return compare(o1, 0, o1.length, o2, 0, o2.length);
      }
    };
    Writer writer = HFile.getWriterFactory(conf, cacheConf)
        .withOutputStream(fout)
        .withBlockSize(minBlockSize)
        .withComparator(comparator)
        .create();
    writer.append("3".getBytes(), "0".getBytes());
    writer.append("2".getBytes(), "0".getBytes());
    writer.append("1".getBytes(), "0".getBytes());
    writer.close();
  }
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   * Test all features work reasonably when hfile is empty of entries.
   * @throws IOException
   */
  public void testEmptyHFile() throws IOException {
    Path f = new Path(ROOT_DIR, getName());
    Writer w = new Writer(this.fs, f);
    w.close();
    Reader r = new Reader(fs, f, null, false);
    r.loadFileInfo();
    assertNull(r.getFirstKey());
    assertNull(r.getLastKey());
  }
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   * test none codecs
   */
  void basicWithSomeCodec(String codec) throws IOException {
    Path ncTFile = new Path(ROOT_DIR, "basic.hfile");
    FSDataOutputStream fout = createFSOutput(ncTFile);
    Writer writer = new Writer(fout, minBlockSize,
      Compression.getCompressionAlgorithmByName(codec), null);
    LOG.info(writer);
    writeRecords(writer);
    fout.close();
    FSDataInputStream fin = fs.open(ncTFile);
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  }

  private void metablocks(final String compress) throws Exception {
    Path mFile = new Path(ROOT_DIR, "meta.hfile");
    FSDataOutputStream fout = createFSOutput(mFile);
    Writer writer = new Writer(fout, minBlockSize,
      Compression.getCompressionAlgorithmByName(compress), null);
    someTestingWithMetaBlock(writer);
    writer.close();
    fout.close();
    FSDataInputStream fin = fs.open(mFile);
    Reader reader = new Reader(fs.open(mFile), this.fs.getFileStatus(mFile)
        .getLen(), null, false);
    reader.loadFileInfo();
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Related Classes of org.apache.hadoop.hbase.io.hfile.HFile.Writer

  • org.apache.hadoop.hbase.io.hfile.TestHFile
  • org.apache.hadoop.hbase.io.hfile.TestHFileSeek
  • org.apache.hadoop.hbase.regionserver.TestStore
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