public void setProjectedOutputColumns(int[] projectedOutputColumns) {
    this.projectedOutputColumns = projectedOutputColumns;
  }
VectorSelectDesc.

Extra parameters beyond SelectDesc just for the VectorSelectOperator.

We don't extend SelectDesc because the base OperatorDesc doesn't support
clone and adding it is a lot work for little gain.
ql/src/java/org/apache/hadoop/hive/ql/plan/VectorSelectDesc.java