private void flushSinglePageWithoutLogging(ISchemaPage page) throws IOException {
    page.syncPageBuffer();
    page.flushPageToChannel(channel);
  }
Load bytes from log, deserialize and flush directly into channel, return current length
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/mtree/impl/pbtree/schemafile/pagemgr/PageIOChannel.java