metadata.addInternalSchemaMetadata(MetadataManager.INTERNAL_CONNECTOR_ID, new DualMetadata());
splitManager.addConnectorSplitManager(new DualSplitManager(nodeManager));
dataStreamProvider.addConnectorDataStreamProvider(new DualDataStreamProvider());
// sys schema
SystemTablesMetadata systemTablesMetadata = new SystemTablesMetadata();
metadata.addInternalSchemaMetadata(MetadataManager.INTERNAL_CONNECTOR_ID, systemTablesMetadata);
SystemSplitManager systemSplitManager = new SystemSplitManager(nodeManager);
splitManager.addConnectorSplitManager(systemSplitManager);