public void setSeriesThreshold(long seriesThreshold) {
    this.seriesThreshold = seriesThreshold;
  }
Get the remain quota of device for the given consensus group.

@param consensusGroupIdSet the consensus group id set
@return the remain quota, >=0
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/schema/ClusterSchemaQuotaStatistics.java