```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');

```

{
    switch (type.getValue())
    {
        case MergeTreeDataPartType::Wide:
            ProfileEvents::increment(ProfileEvents::MergedIntoWideParts);
            break;
        case MergeTreeDataPartType::Compact:
            ProfileEvents::increment(ProfileEvents::MergedIntoCompactParts);
            break;
        case MergeTreeDataPartType::InMemory:
            ProfileEvents::increment(ProfileEvents::MergedIntoInMemoryParts);
            break;
        default:
            break;
    }
}
MergeTreeData::MutableDataPartPtr MergeTreeData::createEmptyPart(