And waits for them. That's pointless.
std::shuffle(replicas.begin(), replicas.end(), thread_local_rng);
    String largest_part_found;
    String largest_replica_found;
    for (const String & replica : replicas)
    {
        if (replica == replica_name)
            continue;
        if (active && !zookeeper->exists(fs::path(zookeeper_path) / "replicas" / replica / "is_active"))
            continue;
        Strings parts = zookeeper->getChildren(fs::path(zookeeper_path) / "replicas" / replica / "parts");
        for (const String & part_on_replica : parts)
        {
            if (part_on_replica == part_name
                || MergeTreePartInfo::contains(part_on_replica, part_name, format_version))
            {
                if (largest_part_found.empty()
                    || MergeTreePartInfo::contains(part_on_replica, largest_part_found, format_version))
                {
                    largest_part_found = part_on_replica;
                    largest_replica_found = replica;
                }
            }
        }
    }
    found_part_name = largest_part_found;
    return largest_replica_found;
}
/** If a quorum is tracked for a part, update information about it in ZK.
  */
void StorageReplicatedMergeTree::updateQuorum(const String & part_name, bool is_parallel)