@Override
  public boolean isSame(OperatorDesc other) {
    if (super.isSame(other)) {
      HashTableSinkDesc otherDesc = (HashTableSinkDesc) other;
      return Objects.equals(getFilterMapString(), otherDesc.getFilterMapString());
    }
    return false;
  }
@param valueTblDescs
         the valueTblDescs to set
ql/src/java/org/apache/hadoop/hive/ql/plan/HashTableSinkDesc.java