TableName createTableInNamespace(NamespaceDescriptor nd) throws Exception {
    final Admin admin = testUtil.getAdmin();
    final TableName tn =
      TableName.valueOf(nd.getName(), testName.getMethodName() + counter.getAndIncrement());

    // Delete the old table
    if (admin.tableExists(tn)) {
      admin.disableTable(tn);
      admin.deleteTable(tn);
    }

    // Create the table
    TableDescriptor tableDesc = TableDescriptorBuilder.newBuilder(tn)
      .setColumnFamily(ColumnFamilyDescriptorBuilder.of(F1)).build();

    admin.createTable(tableDesc);
    return tn;
  }
Waits {@code timeout} milliseconds for the HBase quota table to exist.
hbase-server/src/test/java/org/apache/hadoop/hbase/quotas/SpaceQuotaHelperForTests.java