21.11.3.6
```
cat /etc/clickhouse-server/node.tsv
1,test

cat /etc/clickhouse-server/node_dictionary.xml
<dictionaries>
    <dictionary>
        <name>node</name>
        <source>
            <file>
                <path>/etc/clickhouse-server/node.tsv</path>
                <format>CSV</format>
            </file>
        </source>
        <lifetime>0</lifetime>
        <layout><flat /></layout>
        <structure>
            <id><name>key</name></id>
            <attribute>
                <name>name</name>
                <type>String</type>
                <null_value></null_value>
            </attribute>
        </structure>
    </dictionary>
</dictionaries>

create table default.node ( key UInt64, name String ) Engine=Dictionary(node);

select * from default.node;
┌─key─┬─name─┐
│   1 │ test │
└─────┴──────┘

/etc/init.d/clickhouse-server restart

<Error> Application: DB::Exception: Cannot attach 1 tables due to cyclic dependencies. See server log for details.
<Information> Application: shutting down
```
if (DatabaseCatalog::instance().isTableExist(StorageID(dependency_name.database, dependency_name.table), global_context))
            return remove_loaded;
        
        if (dependency_name.database == metadata.default_database &&
            global_context->getExternalDictionariesLoader().has(dependency_name.table))
            return remove_loaded;
        
        
        
        LOG_WARNING(log, "Tables {} depend on {}, but seems like the it does not exist. Will ignore it and try to load existing tables",
                    fmt::join(info.dependent_database_objects, ", "), dependency_name);
        if (!info.dependencies.empty())
            throw Exception(ErrorCodes::LOGICAL_ERROR, "Table {} does not exist, but we have seen its AST and found {} dependencies."
                                                       "It's a bug", dependency_name, info.dependencies.size());
        if (info.dependent_database_objects.empty())
            throw Exception(ErrorCodes::LOGICAL_ERROR, "Table {} does not have dependencies and dependent tables as it expected to."
                                                       "It's a bug", dependency_name);
        return true;
    };
    auto table_it = metadata.dependencies_info.begin();
    while (table_it != metadata.dependencies_info.end())
    {
        auto & info = table_it->second;
        if (need_exclude_dependency(table_it->first, info))
            table_it = removeResolvedDependency(table_it, metadata.independent_database_objects);
        else
            ++table_it;
    }
}
void TablesLoader::loadTablesInTopologicalOrder(ThreadPool & pool)