@Override
  public void force(boolean metaData) throws IOException {
    if (logChannel != null && logChannel.isOpen()) {
      logChannel.force(metaData);
    }
  }
Minimum size to compress, use magic number 32 KB
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/io/LogWriter.java