Ejemplo n.º 1
0
  @Override
  public void enforceSeek() throws IOException {
    if (realSeekDone) return;

    if (delayedReseek && this.isReseekable) {
      reseek(delayedSeekKV);
    } else {
      seek(delayedSeekKV);
    }
  }
    @Override
    public Boolean call() throws Exception {
      Thread.currentThread().setName("reader " + readerId);
      Random rand = new Random();
      StoreFileScanner scanner = reader.getStoreFileScanner(true, pread);

      while (System.currentTimeMillis() < endTime) {
        byte[] row = createRandomRow(rand, firstRow, lastRow);
        KeyValue kvToSeek = new KeyValue(row, family, createRandomQualifier(rand));
        if (rand.nextDouble() < 0.0001) {
          LOG.info("kvToSeek=" + kvToSeek);
        }
        boolean seekResult;
        try {
          seekResult = scanner.seek(kvToSeek);
        } catch (IOException ex) {
          throw new IOException("Seek failed for key " + kvToSeek + ", pread=" + pread, ex);
        }
        numSeeks.incrementAndGet();
        if (!seekResult) {
          error("Seek returned false for row " + Bytes.toStringBinary(row));
          return false;
        }
        for (int i = 0; i < rand.nextInt(10) + 1; ++i) {
          KeyValue kv = scanner.next();
          numKV.incrementAndGet();
          if (i == 0 && kv == null) {
            error(
                "scanner.next() returned null at the first iteration for "
                    + "row "
                    + Bytes.toStringBinary(row));
            return false;
          }
          if (kv == null) break;

          String keyHashStr = MD5Hash.getMD5AsHex(kv.getKey());
          keysRead.add(keyHashStr);
          totalBytes.addAndGet(kv.getLength());
        }
      }

      return true;
    }