public void forceMlog() {
    Map<SchemaRegionId, ISchemaRegion> schemaRegionMap = this.schemaRegionMap;
    if (schemaRegionMap != null) {
      for (ISchemaRegion schemaRegion : schemaRegionMap.values()) {
        schemaRegion.forceMlog();
      }
    }
  }
Scan the database and schema region directories to recover schema regions and return the
collected local schema partition info for localSchemaPartitionTable recovery.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/SchemaEngine.java