**How to reproduce**
Clickhouse server 20.13.1.5273
```
CREATE TABLE default.test
(
`key` UInt32,
`ts` DateTime CODEC(DoubleDelta, LZ4),
`db_time` DateTime DEFAULT now() COMMENT 'spout-ignore' CODEC(DoubleDelta, LZ4)
)
ENGINE = MergeTree
PARTITION BY toStartOfTenMinutes(db_time)
ORDER BY (key, ts)
TTL db_time + toIntervalHour(3)
SETTINGS index_granularity = 8192, merge_with_ttl_timeout = 3600, min_rows_for_compact_part = 1000000, min_bytes_for_compact_part = 200000000, in_memory_parts_enable_wal = 0;


INSERT INTO test(key, ts) SELECT number % 1000, now() + intDiv(number,1000) FROM numbers(500);

SELECT * FROM test;
500 rows in set. Elapsed: 0.003 sec.

DETACH TABLE test;

ATTACH TABLE test;

SELECT * FROM test;

0 rows in set. Elapsed: 0.002 sec.
```

**Expected behavior**
Clickhouse would flush parts on disk.
PartLogElement part_log_elem;
        part_log_elem.event_type = PartLogElement::REMOVE_PART;
        const auto time_now = std::chrono::system_clock::now();
        part_log_elem.event_time = time_in_seconds(time_now);
        part_log_elem.event_time_microseconds = time_in_microseconds(time_now);
        part_log_elem.duration_ms = 0; 
        part_log_elem.database_name = table_id.database_name;
        part_log_elem.table_name = table_id.table_name;
        for (const auto & part : parts)
        {
            part_log_elem.partition_id = part->info.partition_id;
            part_log_elem.part_name = part->name;
            part_log_elem.bytes_compressed_on_disk = part->getBytesOnDisk();
            part_log_elem.rows = part->rows_count;
            part_log->add(part_log_elem);
        }
    }
}
size_t MergeTreeData::clearOldPartsFromFilesystem(bool force)
{
    DataPartsVector parts_to_remove = grabOldParts(force);
    clearPartsFromFilesystem(parts_to_remove);
    removePartsFinally(parts_to_remove);
    
    
    if (!parts_to_remove.empty())
        getContext()->dropMMappedFileCache();
    return parts_to_remove.size();
}
void MergeTreeData::clearPartsFromFilesystem(const DataPartsVector & parts_to_remove)