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 

replaced_parts = checkPartChecksumsAndCommit(transaction, part);
            /** If a quorum is tracked for this part, you must update it.
              * If you do not have time, in case of losing the session, when you restart the server - see the `ReplicatedMergeTreeRestartingThread::updateQuorumIfWeHavePart` method.
              */
            if (quorum)
            {
                
                if (zookeeper->exists(fs::path(zookeeper_path) / "quorum" / "parallel" / part_name))
                    updateQuorum(part_name, true);
                else if (zookeeper->exists(fs::path(zookeeper_path) / "quorum" / "status"))
                    updateQuorum(part_name, false);
            }
            
            if (part_info.level != 0 || part_info.mutation != 0)
            {
                Strings quorum_parts = zookeeper->getChildren(fs::path(zookeeper_path) / "quorum" / "parallel");
                for (const String & quorum_part : quorum_parts)
                {
                    auto quorum_part_info = MergeTreePartInfo::fromPartName(quorum_part, format_version);
                    if (part_info.contains(quorum_part_info))
                        updateQuorum(quorum_part, true);
                }
            }
            merge_selecting_task->schedule();
            for (const auto & replaced_part : replaced_parts)
            {
                LOG_DEBUG(log, "Part {} is rendered obsolete by fetching part {}", replaced_part->name, part_name);
                ProfileEvents::increment(ProfileEvents::ObsoleteReplicatedParts);
            }
            write_part_log({});