processing/src/main/java/org/apache/carbondata/processing/loading/steps/InputProcessorStepWithNoConverterImpl.java [301:320]:
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    private boolean internalHasNext() {
      if (firstTime) {
        firstTime = false;
        currentIterator.initialize();
      }
      boolean hasNext = currentIterator.hasNext();
      // If iterator is finished then check for next iterator.
      if (!hasNext) {
        currentIterator.close();
        // Check next iterator is available in the list.
        if (counter < inputIterators.size()) {
          // Get the next iterator from the list.
          currentIterator = inputIterators.get(counter++);
          // Initialize the new iterator
          currentIterator.initialize();
          hasNext = internalHasNext();
        }
      }
      return hasNext;
    }
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processing/src/main/java/org/apache/carbondata/processing/loading/steps/InputProcessorStepImpl.java [166:185]:
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    private boolean internalHasNext() {
      if (firstTime) {
        firstTime = false;
        currentIterator.initialize();
      }
      boolean hasNext = currentIterator.hasNext();
      // If iterator is finished then check for next iterator.
      if (!hasNext) {
        currentIterator.close();
        // Check next iterator is available in the list.
        if (counter < inputIterators.size()) {
          // Get the next iterator from the list.
          currentIterator = inputIterators.get(counter++);
          // Initialize the new iterator
          currentIterator.initialize();
          hasNext = internalHasNext();
        }
      }
      return hasNext;
    }
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