test_forward_expiration is flaky

[lzydmxy]

RaftKeeper version

v2.0.4

Description

We isolated the network between node 3 and nodes (1, 2). If node 3 is the leader, the test will fail.

        node1_zk = node1.get_fake_zk(session_timeout=15)
        node2_zk = node2.get_fake_zk()
        node3_zk = node3.get_fake_zk()

        node1_zk.sync("/")  # Make node1 and node3 establish a forward connection

        with PartitionManager() as pm:
            pm.partition_instances(node3, node2)
            pm.partition_instances(node3, node1)
            time.sleep(3)
            begin = datetime.now()
            with pytest.raises(OperationTimeoutError):
                node1_zk.sync("/")
            end = datetime.now()

We make an

How to reproduce