@Override
  public TThrottleQuotaResp getThrottleQuota() {
    TThrottleQuotaResp throttleQuotaResp = new TThrottleQuotaResp();
    try (ConfigNodeClient configNodeClient =
        CONFIG_NODE_CLIENT_MANAGER.borrowClient(ConfigNodeInfo.CONFIG_REGION_ID)) {
      // Send request to some API server
      throttleQuotaResp = configNodeClient.getThrottleQuota();
    } catch (final Exception e) {
      LOGGER.error(e.getMessage());
    }
    return throttleQuotaResp;
  }
FIXME Consolidate this clientManager with the upper one.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java