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 

{
    auto lock1 = lockForShare(local_context->getCurrentQueryId(), local_context->getSettingsRef().lock_acquire_timeout);
    auto lock2 = dest_table->lockForShare(local_context->getCurrentQueryId(), local_context->getSettingsRef().lock_acquire_timeout);
    auto merges_blocker = stopMergesAndWait();
    auto dest_table_storage = std::dynamic_pointer_cast<StorageMergeTree>(dest_table);
    if (!dest_table_storage)
        throw Exception("Table " + getStorageID().getNameForLogs() + " supports movePartitionToTable only for MergeTree family of table engines."
                        " Got " + dest_table->getName(), ErrorCodes::NOT_IMPLEMENTED);
    if (dest_table_storage->getStoragePolicy() != this->getStoragePolicy())
        throw Exception("Destination table " + dest_table_storage->getStorageID().getNameForLogs() +
                       " should have the same storage policy of source table " + getStorageID().getNameForLogs() + ". " +
                       getStorageID().getNameForLogs() + ": " + this->getStoragePolicy()->getName() + ", " +
                       dest_table_storage->getStorageID().getNameForLogs() + ": " + dest_table_storage->getStoragePolicy()->getName(), ErrorCodes::UNKNOWN_POLICY);
    auto dest_metadata_snapshot = dest_table->getInMemoryMetadataPtr();
    auto metadata_snapshot = getInMemoryMetadataPtr();
    Stopwatch watch;
    MergeTreeData & src_data = dest_table_storage->checkStructureAndGetMergeTreeData(*this, metadata_snapshot, dest_metadata_snapshot);
    String partition_id = getPartitionIDFromQuery(partition, local_context);
    DataPartsVector src_parts = src_data.getDataPartsVectorInPartition(MergeTreeDataPartState::Committed, partition_id);
    MutableDataPartsVector dst_parts;
    static const String TMP_PREFIX = "tmp_move_from_";
    for (const DataPartPtr & src_part : src_parts)
    {
        if (!dest_table_storage->canReplacePartition(src_part))
            throw Exception(
                "Cannot move partition '" + partition_id + "' because part '" + src_part->name + "' has inconsistent granularity with table",
                ErrorCodes::LOGICAL_ERROR);
        
        Int64 temp_index = insert_increment.get();