protected static void switchExceedThrottleQuota(final Connection connection,
    boolean exceedThrottleQuotaEnabled) throws IOException {
    if (exceedThrottleQuotaEnabled) {
      checkRSQuotaToEnableExceedThrottle(
        getRegionServerQuota(connection, QuotaTableUtil.QUOTA_REGION_SERVER_ROW_KEY));
    }

    Put put = new Put(getExceedThrottleQuotaRowKey());
    put.addColumn(QUOTA_FAMILY_INFO, QUOTA_QUALIFIER_SETTINGS,
      Bytes.toBytes(exceedThrottleQuotaEnabled));
    doPut(connection, put);
  }
Returns true if the support for quota is enabled
hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaUtil.java