public void setNumDVs(long numDVs) {
    this.numDVs = numDVs;
    setNumDVsIsSet(true);
  }
Returns true if field numNulls is set (has been assigned a value) and false otherwise
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/DecimalColumnStatsData.java