Flaky test_distributed_ddl::test_implicit_macros[configs]

[qoega]

Describe the bug

hosts = ':2181'

    def collect_hosts(hosts):
        """
           Collect a set of hosts and an optional chroot from
           a string or a list of strings.
        """
        if isinstance(hosts, list):
            if hosts[-1].strip().startswith('/'):
                host_ports, chroot = hosts[:-1], hosts[-1]
            else:
                host_ports, chroot = hosts, None
        else:
            host_ports, chroot = hosts.partition("/")[::2]
            host_ports = host_ports.split(",")
            chroot = "/" + chroot if chroot else None
    
        result = []
        for host_port in host_ports:
            # put all complexity of dealing with
            # IPv4 & IPv6 address:port on the urlsplit
            res = urllib_parse.urlsplit("xxx://" + host_port)
            host = res.hostname
            if host is None:
>               raise ValueError("bad hostname")
E               ValueError: bad hostname

somehow we have no hosts for kazoo when checking

        # Check that table was created at correct path in zookeeper
>       assert (
            test_cluster.get_kazoo_client("zoo1").exists(
                "/clickhouse/tables/test_db/0-1/test_macro"
            )
            is not None
        )

https://s3.amazonaws.com/clickhouse-test-reports/0/05ff9338577ec57914d73e7fe480b9cc563e2169/integration_tests__asan__[2_4].html

How to reproduce

No response

Error message and/or stacktrace

No response