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

Examples of org.apache.hadoop.hbase.io.hfile.HFile.Reader.loadFileInfo()

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  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());
  }

  // write some records into the tfile
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    fout.close();
    FSDataInputStream fin = fs.open(ncTFile);
    Reader reader = new Reader(fs.open(ncTFile),
      fs.getFileStatus(ncTFile).getLen(), null, false);
    // 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);
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    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();
    // No data -- this should return false.
    assertFalse(reader.getScanner(false, false).seekTo());
    someReadingWithMetaBlock(reader);
    fs.delete(mFile, true);
    reader.close();
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        Compression.Algorithm.NONE, null);
    writer.append("foo".getBytes(), "value".getBytes());
    writer.close();
    fout.close();
    Reader reader = new Reader(fs, mFile, null, false);
    reader.loadFileInfo();
    assertNull(reader.getMetaBlock("non-existant", false));
  }

  /**
   * Make sure the orginals for our compression libs doesn't change on us.
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        HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes(familyStr));
        // verify that the compression on this file matches the configured
        // compression
        Path dataFilePath = fs.listStatus(f.getPath())[0].getPath();
        Reader reader = HFile.createReader(fs, dataFilePath, new CacheConfig(conf), conf);
        Map<byte[], byte[]> fileInfo = reader.loadFileInfo();

        byte[] bloomFilter = fileInfo.get(StoreFile.BLOOM_FILTER_TYPE_KEY);
        if (bloomFilter == null) bloomFilter = Bytes.toBytes("NONE");
        assertEquals("Incorrect bloom filter used for column family " + familyStr +
          "(reader: " + reader + ")",
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        HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes(familyStr));
        // verify that the compression on this file matches the configured
        // compression
        Path dataFilePath = fs.listStatus(f.getPath())[0].getPath();
        Reader reader = HFile.createReader(fs, dataFilePath, new CacheConfig(conf), conf);
        Map<byte[], byte[]> fileInfo = reader.loadFileInfo();

        byte[] bloomFilter = fileInfo.get(StoreFile.BLOOM_FILTER_TYPE_KEY);
        if (bloomFilter == null) bloomFilter = Bytes.toBytes("NONE");
        assertEquals("Incorrect bloom filter used for column family " + familyStr +
          "(reader: " + reader + ")",
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            // 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;
          }
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    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());
  }

  // write some records into the tfile
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    FSDataInputStream fin = fs.open(ncTFile);
    Reader reader = HFile.createReaderFromStream(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);
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    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();
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