@Explain(displayName = "# buckets")
  public Integer getNumBucketsExplain() {
    if (numBuckets == -1) {
      return null;
    } else {
      return numBuckets;
    }
  }
DDL task description for CREATE TABLE commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/create/CreateTableDesc.java