@Explain(displayName = "name", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
  public String getMaterializedViewName() {
    return fqMaterializedViewName;
  }
DDL task description for the ALTER MATERIALIZED VIEW (ENABLE|DISABLE) REWRITE commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/view/materialized/alter/rewrite/AlterMaterializedViewRewriteDesc.java