private boolean dropCreationMetadata(String catName, String dbName, String tableName) {
    boolean success = false;
    try {
      openTransaction();
      MCreationMetadata mcm = getCreationMetadata(catName, dbName, tableName);
      pm.retrieve(mcm);
      if (mcm != null) {
        pm.deletePersistentAll(mcm);
      }
      success = commitTransaction();
    } finally {
      rollbackAndCleanup(success, null);
    }
    return success;
  }
Convert PrivilegeGrantInfo from privMap to MTablePrivilege, and add all of
them to the toPersistPrivObjs. These privilege objects will be persisted as
part of createTable.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java