```sql
CREATE TABLE t
(
   id Int64, 
   d String,
   p Map(String, String)
   
)
ENGINE = ReplacingMergeTree order by id settings index_granularity  = 0;


insert into t values (1,  's', {'a':'b'});

CH starts eating RAM until it crashes

the same with

insert into t select 1,  's', map('a','b');

```

currently_emerging_big_parts.emplace(
                        part_name, EmergingPartInfo{reserved_space->getDisk(0)->getName(), part_info.partition_id, part_size});
                    for (const auto & part : covered_parts)
                    {
                        if (currently_submerging_big_parts.contains(part))
                            LOG_WARNING(log, "currently_submerging_big_parts contains duplicates. JBOD might lose balance");
                        else
                            currently_submerging_big_parts.insert(part);
                    }
                    
                    tagger_ptr->emplace(*this, part_name, std::move(covered_parts), log);
                }
            }
        }
        catch (...)
        {
            LOG_DEBUG(log, "JBOD balancer encounters an error. Fallback to random disk selection");
            tryLogCurrentException(log);
        }
    }
    return reserved_space;
}
ColumnsDescription MergeTreeData::getConcreteObjectColumns(
    const DataPartsVector & parts, const ColumnsDescription & storage_columns)
{
    return DB::getConcreteObjectColumns(
        parts.begin(), parts.end(),
        storage_columns, [](const auto & part) -> const auto & { return part->getColumns(); });
}
ColumnsDescription MergeTreeData::getConcreteObjectColumns(