`2021.12.12 04:24:12.020896 [ 491 ] {} <Information> RaftInstance: parameters: timeout 0 - 0, heartbeat 0, leadership expiry 0, max batch 100, backoff 50, snapshot distance 10000, log sync stop gap 99999, reserved logs -1530494976, client timeout 
10000, auto forwarding ON, API call type ASYNC, custom commit quorum size 0, custom election quorum size 0, snapshot receiver INCLUDED, leadership transfer wait time 0, grace period of lagging state machine 0, snapshot IO: BLOCKING`

Why `reserved logs -1530494976` (negative number)?
`timeout 0 - 0` - not obvious what does it mean.
`snapshot receiver INCLUDED` - it is screaming for what?
LOG_INFO(log, "Command to remove server {} was not accepted for the {} time, will sleep for {} ms and retry", task.server->get_id(), i + 1, sleep_ms * (i + 1));
            std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms * (i + 1)));
        }
        if (!removed)
            throw Exception(ErrorCodes::RAFT_ERROR, "Configuration change to remove server (id {}) was not accepted by RAFT after all {} retries", task.server->get_id(), coordination_settings->configuration_change_tries_count);
    }
    else if (task.action_type == ConfigUpdateActionType::UpdatePriority)
        raft_instance->set_priority(task.server->get_id(), task.server->get_priority());
    else
        LOG_WARNING(log, "Unknown configuration update type {}", static_cast<uint64_t>(task.action_type));
}
bool KeeperServer::waitConfigurationUpdate(const ConfigUpdateAction & task)
{
    size_t sleep_ms = 500;
    if (task.action_type == ConfigUpdateActionType::AddServer)
    {
        LOG_INFO(log, "Will try to wait server with id {} to be added", task.server->get_id());
        for (size_t i = 0; i < coordination_settings->configuration_change_tries_count; ++i)
        {
            if (raft_instance->get_srv_config(task.server->get_id()) != nullptr)
            {
                LOG_INFO(log, "Server with id {} was successfully added by leader", task.server->get_id());
                return true;
            }
            if (isLeader())
            {
                LOG_INFO(log, "We are leader now, probably we will have to add server {}", task.server->get_id());
                return false;
            }
            std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms * (i + 1)));