@Override
  public TSStatus deleteDatabases(final TDeleteDatabasesReq tDeleteReq) {
    return configManager.deleteDatabases(tDeleteReq);
  }
ConfigNodeRPCServer exposes the interface that interacts with the DataNode
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/service/thrift/ConfigNodeRPCServiceProcessor.java