in modules/spark/src/main/java/org/apache/fluo/recipes/spark/AccumuloRangePartitioner.java [44:49]
public int getPartition(Object o) {
RowColumn rc = (RowColumn) o;
int index = Collections.binarySearch(splits, rc.getRow());
index = index < 0 ? (index + 1) * -1 : index;
return index;
}