@Override
    protected void processValue(Aggregation myagg, ColumnVector columnVector, int i) {
      BytesColumnVector inputColumn = (BytesColumnVector) columnVector;
      myagg.bf.addBytes(inputColumn.vector[i], inputColumn.start[i], inputColumn.length[i]);
    }
class for storing the current aggregate value.
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/aggregates/VectorUDAFBloomFilter.java