core/src/main/java/com/orientechnologies/orient/core/iterator/ORecordIteratorClusters.java
@Override
  public ORecordIteratorClusters<REC> setLiveUpdated(boolean iLiveUpdated) {
    super.setLiveUpdated(iLiveUpdated);

    if (iLiveUpdated) {
      firstClusterEntry = 0;
      lastClusterEntry = Long.MAX_VALUE;
    } else {
      updateClusterRange();
    }

    return this;
  }
@Override
  public ORecordIteratorClusters<REC> setLiveUpdated(boolean iLiveUpdated) {
    super.setLiveUpdated(iLiveUpdated);

    if (iLiveUpdated) {
      firstClusterEntry = 0;
      lastClusterEntry = Long.MAX_VALUE;
    } else {
      updateClusterRange();
    }

    return this;
  }
Tell to the iterator that the upper limit must be checked at every cycle. Useful when concurrent deletes or additions change
the size of the cluster while you're browsing it. Default is false.

@param iLiveUpdated True to activate it, otherwise false (default)
@see #isLiveUpdated()