```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');

```

{
    DataPartsVector res;
    auto lock = lockParts();
    res.assign(data_parts_by_info.begin(), data_parts_by_info.end());
    if (out_states != nullptr)
    {
        out_states->resize(res.size());
        for (size_t i = 0; i < res.size(); ++i)
            (*out_states)[i] = res[i]->getState();
    }
    return res;
}
bool MergeTreeData::supportsLightweightDelete() const