backup-core/src/main/java/org/apache/iotdb/backup/core/pipeline/out/sink/OutCsvFileSink.java [141:153]:
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  @Override
  public Double[] rateOfProcess() {
    log.info("已经导出文件：{}", finishedFileNum);
    log.info("总文件数：{}", totalFileNum);
    Double[] rateDouble = new Double[2];
    rateDouble[0] = finishedFileNum.doubleValue();
    rateDouble[1] = Double.parseDouble(String.valueOf(totalFileNum));
    return rateDouble;
  }

  @Override
  public Long finishedRowNum() {
    return finishedRowNum.get();
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backup-core/src/main/java/org/apache/iotdb/backup/core/pipeline/out/sink/OutTsfileDataSink.java [356:368]:
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  @Override
  public Double[] rateOfProcess() {
    log.info("已经导出文件：{}", finishedFileNum);
    log.info("总文件数：{}", totalFileNum);
    Double[] rateDouble = new Double[2];
    rateDouble[0] = finishedFileNum.doubleValue();
    rateDouble[1] = Double.parseDouble(String.valueOf(totalFileNum));
    return rateDouble;
  }

  @Override
  public Long finishedRowNum() {
    return finishedRowNum.get();
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