@Explain(displayName = "Query parallelism", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
  public int getQueryParallelism() {
    return queryParallelism;
  }
DDL task description for CREATE POOL commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/workloadmanagement/pool/create/CreateWMPoolDesc.java