I am reading clickhouse mutation code. In StorageMergeTree->selectPartsToMutate() function, there is a check 
`if (current_ast_elements + commands_size >= max_ast_elements)
                break;`

I think if there are many mutations then the check result will be true, so that it will skip the remaining mutations.
But the new part's mutation is set to the last one in mutation map, and it does not apply the remaining mutations actually.
`new_part_info.mutation = current_mutations_by_version.rbegin()->first;`

Then the new part will miss the remaining mutations in future mutation job.

I think it's wrong here. Am I right?

If it is right, I will submit a PR 

throw Exception("Not found part " + part_desc->new_part_name +
                            " (or part covering it) neither source table neither remote replicas" , ErrorCodes::NO_REPLICA_HAS_PART);
        }
    }
    
    PartDescriptions final_parts;
    Strings final_part_names;
    {
        final_part_names = adding_parts_active_set.getParts();
        for (const String & final_part_name : final_part_names)
        {
            auto part_desc = part_name_to_desc[final_part_name];
            if (!part_desc)
                throw Exception("There is no final part " + final_part_name + ". This is a bug", ErrorCodes::LOGICAL_ERROR);
            final_parts.emplace_back(part_desc);
            if (final_parts.size() > 1)
            {
                auto & prev = *final_parts[final_parts.size() - 2];
                auto & curr = *final_parts[final_parts.size() - 1];
                if (!prev.found_new_part_info.isDisjoint(curr.found_new_part_info))
                {
                    throw Exception("Intersected final parts detected: " + prev.found_new_part_name
                        + " and " + curr.found_new_part_name + ". It should be investigated.", ErrorCodes::LOGICAL_ERROR);
                }
            }
        }
    }
    static const String TMP_PREFIX = "tmp_replace_from_";
    auto obtain_part = [&] (PartDescriptionPtr & part_desc)
    {