private long getLastFlushTime(long timePartitionID, IDeviceID deviceID) {
    return config.isEnableSeparateData()
        ? lastFlushTimeMap.getFlushedTime(timePartitionID, deviceID)
        : Long.MAX_VALUE;
  }
insert one row of data.

@param insertRowNode one row of data
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/DataRegion.java