public TypeInfo[] getProjectedColumnTypeInfos() {
    return projectedColumnTypeInfos;
  }
VectorTableScanDesc.

Extra parameters beyond TableScanDesc just for the VectorTableScanOperator.

We don't extend TableScanDesc 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/VectorTableScanDesc.java