public void setNumNulls(long numNulls) {
    this.numNulls = numNulls;
  }
MTableColumnStatistics - Represents Hive's Column Statistics Description. The fields in this
class with the exception of table are persisted in the metastore. In case of table, tbl_id is
persisted in its place.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/model/MTableColumnStatistics.java