private void submitSendNewDataBlockEventTask(int startSequenceId, List<Long> blockSizes) {
    executorService.submit(new SendNewDataBlockEventTask(startSequenceId, blockSizes));
  }
max bytes this SinkChannel can reserve.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/exchange/sink/SinkChannel.java