public void setOpToSamplePruner(
        HashMap<TableScanOperator, SampleDesc> opToSamplePruner) {
      this.opToSamplePruner = opToSamplePruner;
    }
@param opToSamplePruner
         the opToSamplePruner to set
ql/src/java/org/apache/hadoop/hive/ql/optimizer/SamplePruner.java