**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.
DataPartsVector commit(MergeTreeData::DataPartsLock * acquired_parts_lock = nullptr);
        void rollback();
        
        
        void rollbackPartsToTemporaryState();
        size_t size() const { return precommitted_parts.size(); }
        bool isEmpty() const { return precommitted_parts.empty(); }
        ~Transaction()
        {
            try
            {
                rollback();
            }
            catch (...)
            {
                tryLogCurrentException("~MergeTreeData::Transaction");
            }
        }
    private:
        friend class MergeTreeData;
        MergeTreeData & data;
        DataParts precommitted_parts;
        void clear() { precommitted_parts.clear(); }
    };
    using TransactionUniquePtr = std::unique_ptr<Transaction>;
    using PathWithDisk = std::pair<String, DiskPtr>;
    struct PartsTemporaryRename : private boost::noncopyable
    {
        PartsTemporaryRename(