```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');

```

LOG_DEBUG(log, "Loading data parts");
    auto metadata_snapshot = getInMemoryMetadataPtr();
    const auto settings = getSettings();
    Strings part_file_names;
    auto disks = getStoragePolicy()->getDisks();
    
    if (!getStoragePolicy()->isDefaultPolicy() && !skip_sanity_checks)
    {
        
        std::unordered_set<String> defined_disk_names;
        
        std::unordered_set<String> disk_names_wrapped_in_cache;
        for (const auto & disk_ptr : disks)
            defined_disk_names.insert(disk_ptr->getName());
        for (const auto & [disk_name, disk_ptr] : getContext()->getDisksMap())
        {
            
            
            
            
            if (disk_ptr->supportsCache() && defined_disk_names.contains(disk_ptr->getName()))
            {
                auto caches = disk_ptr->getCacheLayersNames();
                disk_names_wrapped_in_cache.insert(caches.begin(), caches.end());
                LOG_TEST(log, "Cache layers for cache disk `{}`, inner disk `{}`: {}",
                         disk_name, disk_ptr->getName(), fmt::join(caches, ", "));
            }
        }
        for (const auto & [disk_name, disk] : getContext()->getDisksMap())
        {